The mean height of a group of 30 students is 150 cm. If a 150 cm tall student is included in the group, then find the mean heigh of the new group.

The mean height of a group of 30 students is 150 cm. If a 150 cm tall student is included in the group, then find the mean heigh of the new group.
by

1 Answer

Answer :

The mean height of a group of 30 students is 150 cm. If a 150 cm tall student is included in the group, then find the mean heigh of the new group.
by
selected by

Related questions

How would you draw a rectangular prism with a length of 8 inches a width of 4 inches and a heigh of 11 inches?

Description : How would you draw a rectangular prism with a length of 8 inches a width of 4 inches and a heigh of 11 inches?

Last Answer : You cannot draw it since it is a three dimensional object. Youcan only draw a projection of a 3-d object in a 2-d plane.

When Last semester 150 of 800 students made honor roll what percent of student made honor roll?

Description : When Last semester 150 of 800 students made honor roll what percent of student made honor roll?

Last Answer : 150 as a percentage of 800 is 18.75%

The average age of 78 students of a batch is 30 years. If the age of the head master be included, then the average increases by 6 months. Find the age of head master? A) 56yrs 5 months B) 66yrs 6 months C) 56yrs 5 months D) 69yrs 5 months

Description : The average age of 78 students of a batch is 30 years. If the age of the head master be included, then the average increases by 6 months. Find the age of head master? A) 56yrs 5 months B) 66yrs 6 months C) 56yrs 5 months D) 69yrs 5 months

Last Answer : D)  Total age of 78 students = (780 * 30)yrs  = 2340 yrs  Average of 79 persons = 30 yrs 6 months  = 6 ½ yrs  Total age of 79 persons = 61/2 * 79  = 2409.5  Age of headmaster = (2409.5 – 2340)yrs  = 69.5 yrs = 69 yrs 5 months.

If a student drops a stone from a cliff of height 30 m and the time it takes to reach the ground is 2.6 s, then the acceleration due to gravity isA. 9 m s-2B. 10 m s-2C. 4 m s-2D. 8.8 m s-2

Description : If a student drops a stone from a cliff of height 30 m and the time it takes to reach the ground is 2.6 s, then the acceleration due to gravity isA. 9 m s-2 B. 10 m s-2 C. 4 m s-2 D. 8.8 m s-2

Last Answer : 8.8 m s-2

To prevent segregation, the maximum height for placing concrete, is (A) 100 cm (B) 125 cm (C) 150 cm (D) 200 cm

Description : To prevent segregation, the maximum height for placing concrete, is (A) 100 cm (B) 125 cm (C) 150 cm (D) 200 cm

Last Answer : Answer: Option A

Suppose a teacher has short height. It creates an obstacle in utilizing the black-board in a justifiable manner. Therefore, the students cannot follow the lessons inspite of utmost care taken by the teacher. In such a condition what would you like to suggest him? Options: A) Good! Atleast you can save your labour and clothes from dust particles B) You suggest him to make a temporary platform of bricks with the help of students C) You suggest him to make a complaint with the principal D) Collect donations from his student to reconstruct the black-board

Description : Suppose a teacher has short height. It creates an obstacle in utilizing the black-board in a justifiable manner. Therefore, the students cannot follow the lessons inspite of utmost care taken by ... a complaint with the principal D) Collect donations from his student to reconstruct the black-board

Last Answer : You suggest him to make a temporary platform of bricks with the help of students

The mean weight per student in a group of 7 students is 55 kg. -Maths 9th

Description : The mean weight per student in a group of 7 students is 55 kg. -Maths 9th

Last Answer : x̅ = 1 / n (Σxi) ⇒ 55 = x1 + x2 + .......+ ⇒ x7 / 7 ⇒ x1 + x2 + ...... + x7 = 55 × 7 = 385 x1 + x2 + ...... + x6 = 52 + 54 + 55 + 53 + 56 + 54 = 324 ∴ x7 = 385 - 324 = 61 kg ∴ weight of the seventh student is 61 kg.

The mean weight per student in a group of 7 students is 55 kg. -Maths 9th

Description : The mean weight per student in a group of 7 students is 55 kg. -Maths 9th

Last Answer : x̅ = 1 / n (Σxi) ⇒ 55 = x1 + x2 + .......+ ⇒ x7 / 7 ⇒ x1 + x2 + ...... + x7 = 55 × 7 = 385 x1 + x2 + ...... + x6 = 52 + 54 + 55 + 53 + 56 + 54 = 324 ∴ x7 = 385 - 324 = 61 kg ∴ weight of the seventh student is 61 kg.

The average marks scored by two Class A1 and A2 students are 120 and 130 respectively. If 8 students are moved from Class A2 to Class A1 and the average marks of the two Class get interchanged. Find the total number of students in two Class put together, if the average marks scored by the 8 students who moved is 150 A) 25 B) 30 C) 35 D) 40

Description : The average marks scored by two Class A1 and A2 students are 120 and 130 respectively. If 8 students are moved from Class A2 to Class A1 and the average marks of the two Class get interchanged. Find the total number ... average marks scored by the 8 students who moved is 150 A) 25 B) 30 C) 35 D) 40

Last Answer :  D)  let the number of students in Class A1 be x and class A2 be y. Total marks scored by the students will be 120x and 130y, the average gets interchanged after moving student from y Thus we get, 130y- ... (x+8) 120x+1200=130x+1040 10x=160 X=16 Thus the total number of students =24+16=40

The average age of 150 students in a class is 40% of the number of students in the class and the average age of a group of 50 students present in the class is 32yrs and the average age of another 50 students in the class is 36yrs. What is the average age of the remaining students in the class? A) 102 B) 118 C) 112 D) 108

Description : The average age of 150 students in a class is 40% of the number of students in the class and the average age of a group of 50 students present in the class is 32yrs and the average age of another 50 students ... is the average age of the remaining students in the class? A) 102 B) 118 C) 112 D) 108

Last Answer : C) 150 students average 150×40/100=60 years According to the question, 150×60=50×32+50×36+50×X 50×X=9000-1600-1800 50x=5600 X=112

What is the shear stress acting along the neutral axis of triangular beam section, with base 60 mm and height 150 mm, when shear force of 30 kN acts? a. 15.36 N/mm2 b. 10.6 N/mm2 c. 8.88 N/mm2 d. Insufficient data

Description : What is the shear stress acting along the neutral axis of triangular beam section, with base 60 mm and height 150 mm, when shear force of 30 kN acts? a. 15.36 N/mm2 b. 10.6 N/mm2 c. 8.88 N/mm2 d. Insufficient data

Last Answer : c. 8.88 N/mm2

The heights of 7 students are given below (in cm) : 120, 126, 132.41, 121.52, 120.35, 132, 125. Find the median height of the students.

Description : The heights of 7 students are given below (in cm) : 120, 126, 132.41, 121.52, 120.35, 132, 125. Find the median height of the students.

Last Answer : The heights of 7 students are given below (in cm) : 120, 126, 132.41, 121.52, 120.35, 132, 125. Find the median height of the students.

The average height of 50 students in a class is 182 cm. 40 students whose average height is 182.5 cm left the class and 50 students whose average height is 180.5 cm joined the class. Find the average height of the present? A) 180.41 B) 175.5 C) 180.55 D) 185.5

Description : The average height of 50 students in a class is 182 cm. 40 students whose average height is 182.5 cm left the class and 50 students whose average height is 180.5 cm joined the class. Find the average height of the present? A) 180.41 B) 175.5 C) 180.55 D) 185.5

Last Answer : A) The average of the students leaving the class as well as joining the class to be 182 so that the average remains the same. But it is given that the average of the 40 students leaving the class is 182. ... strength of the class. Hence the average of the present class = 182 - 95/60 = 180.5 cm

The average height of a batch is 344 cm. 16more students with an average height of 320 cm joined the batch therefore decreasing the average height of the batch by 12 cm. Find the total strength of the batch? A) 12 B) 11 C) 14 D) 16

Description :  The average height of a batch is 344 cm. 16more students with an average height of 320 cm joined the batch therefore decreasing the average height of the batch by 12 cm. Find the total strength of the batch? A) 12 B) 11 C) 14 D) 16 

Last Answer : Answer: D) let the initial strength of the batch be X total height of the batch initially = 344X total height of 16 new students = 320 * 16 = 5120 cm Then, the average height of X+ 16students = 332  332 = [5120 + 344 X]/ [X + 16]  X= 16 students

A single purchase crab has a handle 45 cm long and a drum of 25 cm diameter. The pinion has 30 teeth and spur has 150 teeth. The efficiency of the machine is 75%. If the maximum force that can be applied is 500 newtons, the maximum load that can be lifted will be a.9860 N b.6750 N c.20250 N d.1250 N e.13500 N

Description : A single purchase crab has a handle 45 cm long and a drum of 25 cm diameter. The pinion has 30 teeth and spur has 150 teeth. The efficiency of the machine is 75%. If the maximum force that can be applied is ... maximum load that can be lifted will be a.9860 N b.6750 N c.20250 N d.1250 N e.13500 N

Last Answer : b. 6750 N

If depth of slab is 10 cm, width of web 30 cm, depth of web 50 cm, centre to centre distance of beams 3 m, effective span of beams 6 m, the effective flange width of the beam, is (A) 200 cm (B) 300 cm (C) 150 cm (D) 100 cm

Description : If depth of slab is 10 cm, width of web 30 cm, depth of web 50 cm, centre to centre distance of beams 3 m, effective span of beams 6 m, the effective flange width of the beam, is (A) 200 cm (B) 300 cm (C) 150 cm (D) 100 cm

Last Answer : Answer: Option C

Construct a histogram for the marks of the student given below : - Marks 0-10,10-30,30-45,45-50,50-60 and number of students 8,32,18,10,6 -Maths 9th

Description : Construct a histogram for the marks of the student given below : - Marks 0-10,10-30,30-45,45-50,50-60 and number of students 8,32,18,10,6 -Maths 9th

Last Answer : see in book okay!!!

Construct a histogram for the marks of the student given below : - Marks 0-10,10-30,30-45,45-50,50-60 and number of students 8,32,18,10,6 -Maths 9th

Description : Construct a histogram for the marks of the student given below : - Marks 0-10,10-30,30-45,45-50,50-60 and number of students 8,32,18,10,6 -Maths 9th

Last Answer : see in book okay!!!

Each Student of a class collected some money for the trip. The total money collected by each student was equal to the cube of the total number of students. If the total amount collected was Rs. 29791. find the total number of students. 1. 31 2. 30 3. 28 4. 37 5. 39

Description : Each Student of a class collected some money for the trip. The total money collected by each student was equal to the cube of the total number of students. If the total amount collected was Rs. 29791. find the total number of students. 1. 31 2. 30 3. 28 4. 37 5. 39

Last Answer : 1;  Total number of students

In a college having 300 students, every student reads 5 newspapers and every newspaper is read by 60 students. The number of newspapers required is (A) at least 30 (B) at most 20 (C) exactly 25 (D) exactly 5

Description : In a college having 300 students, every student reads 5 newspapers and every newspaper is read by 60 students. The number of newspapers required is (A) at least 30 (B) at most 20 (C) exactly 25 (D) exactly 5

Last Answer : (C) exactly 25

There are three different categories of jobs A, B and C. The average salary of the students who got the job of A and B categories is Rs.32 lakh per annum. The average salary of the student who got the job of B and C category is 54 lakh per annum. And the average salary of those students who got the job of A and C is Rs.44 lakh per annum. The most appropriate (or closet) range of average salary of all the three categories (if it is known that each student gets only one category for jobs i.e, A, B and C): A) lies between 30 & 44 B) lies between 48 & 56 C) lies between 38 & 45 D) lies between 49 & 50

Description : There are three different categories of jobs A, B and C. The average salary of the students who got the job of A and B categories is Rs.32 lakh per annum. The average salary of the student who got the job of B ... 30 & 44 B) lies between 48 & 56 C) lies between 38 & 45 D) lies between 49 & 50

Last Answer : Answer: C) Let the number of students who got the jobs of A, B and C categories is a, b and c respectively, ∴Total salary of Aand B = 32 (a +b) ∴Total salary of B and C = 54 (b+ ... the minimum salary must be Rs.38 lakh and the maximum salary cannot exceed 45, which is the highest of the three..

Suppose some students indulge in porno graphic painting in the school's toilets and other places on walls and you nab a student busy with the work, what option will you prefer with the students? Options: A) You will warn him and leave as it is the common problem of adolescent's age B) You will reasonably punish him and ask him not do it again C) You will penalize the whole class D) You diagnose the group of such students and regularly keep vigilant eyes on them.

Description : Suppose some students indulge in porno graphic painting in the school's toilets and other places on walls and you nab a student busy with the work, what option will you prefer with the students? ... whole class D) You diagnose the group of such students and regularly keep vigilant eyes on them.

Last Answer : You will reasonably punish him and ask him not do it again

The average height of the students in a group was 360cm. When 10 students whose height is 292.8cm are newly admitted. The average height of the group was reduced by 24cm.How many students are present in the group? A) 29 B) 25 C) 28 D) 14

Description : The average height of the students in a group was 360cm. When 10 students whose height is 292.8cm are newly admitted. The average height of the group was reduced by 24cm.How many students are present in the group? A) 29 B) 25 C) 28 D) 14

Last Answer : Answer: C) let the number of students initially in the class be A, then, total height = A * 360------ 1 again the no of students increased = A + 10 then, total height A + 10 student = (A +10) * 336 ... 3 (A+10) *336-2928 =A*360 336A+3360-2928=360A A=18 Number of students in class = 18+10=28

Height of liquid in agitation tank is normally maintained equal to the tank diameter. However, if the tank is too tall and a large liquid hold up is desired, then two or more impellers mounted on the same shaft may be used. The clearance between the tank bottom and the bottom most impeller should be about (where, D = impeller diameter) (A) 0.5 D (B) D (C) 1.5 D (D) 2 D

Description : Height of liquid in agitation tank is normally maintained equal to the tank diameter. However, if the tank is too tall and a large liquid hold up is desired, then two or more impellers mounted on the same shaft may be used. The ... where, D = impeller diameter) (A) 0.5 D (B) D (C) 1.5 D (D) 2 D

Last Answer : (B) D

You Are A Teacher Of Literature. A Chapter Of A Book Deals With A Biography Of A Scientist And His Works. In This Situation, What Would You Do With Chapter? Options: A) You Would Ask The Students To Read Themselves. B) You Would Request The Science Teacher, To Teach This Chapter To The Students. C) You Would Consult Other Books Concerning With The Scientist And Then Teach The Lesson To Student. D) Any One Of Them.

Description : You Are A Teacher Of Literature. A Chapter Of A Book Deals With A Biography Of A Scientist And His Works. In This Situation, What Would You Do With Chapter? Options: A) You Would Ask The Students ... Other Books Concerning With The Scientist And Then Teach The Lesson To Student. D) Any One Of Them.

Last Answer : C) You Would Consult Other Books Concerning With The Scientist And Then Teach The Lesson To Student. 

In a hostel, 40% of the students play cricket, 20% play chess and 10% both. If a student is selected at random, then the probability that he plays cricket or chess is: a) 1/2 b) 3/5 c) 1/4 d) 4/7

Description : In a hostel, 40% of the students play cricket, 20% play chess and 10% both. If a student is selected at random, then the probability that he plays cricket or chess is: a) 1/2 b) 3/5 c) 1/4 d) 4/7

Last Answer : Answer: A) Given that, 40% play cricket; that is, P(C) = 40/100=4/10 20% play chess; that is, P(c) = 20/100 =2/10 And, 10% play both cricket and chess; that is, P(C And c) = 10/100 = 1/10 Now, we have ... P(C) + P(c) - P(C And c) = 4/20+2/10-1/10 =5/10=1/2 Hence, the required probability 1/2

he frame has a base diameter of 20 cm and height of 30 cm. A margin of 2.5 cm is to be given for folding it over the top and bottom of the frame. -Maths 9th

Description : he frame has a base diameter of 20 cm and height of 30 cm. A margin of 2.5 cm is to be given for folding it over the top and bottom of the frame. -Maths 9th

Last Answer : Say h = height of the frame of lampshade, looks like cylindrical shape r = radius Total height is h = (2.5+30+2.5) cm = 35cm and r = (20/2) cm = 10cm Use curved surface area formula to find the ... 2πrh = (2 (22/7) 10 35) cm2 = 2200 cm2 Hence, 2200 cm2 cloth is required for covering the lampshade.

A compound lens is made of two lenses having powers `+15.5 D` and `-5.5D`. An object of 3cm height is placed at a distance of 30 cm from this compound

Description : A compound lens is made of two lenses having powers `+15.5 D` and `-5.5D`. An object of 3cm height is placed at a distance of 30 cm from this compound

Last Answer : A compound lens is made of two lenses having powers `+15.5 D` and `-5.5D`. An object of ... cm from this compound lens. Find the size of the image.

A plant with 30 cm or more circumference from human chest height is identified as - (1) Herb (2) Shrub (3) Medicinal herbs (4) Tree

Description : A plant with 30 cm or more circumference from human chest height is identified as - (1) Herb (2) Shrub (3) Medicinal herbs (4) Tree

Last Answer : (3) Medicinal herbs Explanation: Medicinal herbs grown from 30 to 90 cm in height. They reach up to 30 cm in diameter. 957.

The standard height of a standard rain gauge, is (A) 10 cm (B) 20 cm (C) 30 cm (D) 50 cm

Description : The standard height of a standard rain gauge, is (A) 10 cm (B) 20 cm (C) 30 cm (D) 50 cm

Last Answer : Answer: Option C

The top diameter, bottom diameter and the height of a slump mould are: (A) 10 cm, 20 cm, 30 cm (B) 10 cm, 30 cm, 20 cm (C) 20 cm, 10 cm, 30 cm (D) 20 cm, 30 cm, 10 cm

Description : The top diameter, bottom diameter and the height of a slump mould are: (A) 10 cm, 20 cm, 30 cm (B) 10 cm, 30 cm, 20 cm (C) 20 cm, 10 cm, 30 cm (D) 20 cm, 30 cm, 10 cm

Last Answer : (A) 10 cm, 20 cm, 30 cm

The dimensions of a 35 litre forma for measuring aggregates by volume, are: (A) length 30 cm, breadth 25 cm, height 30 cm (B) length 39 cm, breadth 25 cm, height 32 cm (C) length 27 cm, breadth 27 cm, height 48 cm (D) length 220 cm, breadth 25 cm, height 40 cm

Description : The dimensions of a 35 litre forma for measuring aggregates by volume, are: (A) length 30 cm, breadth 25 cm, height 30 cm (B) length 39 cm, breadth 25 cm, height 32 cm (C) length 27 cm, breadth 27 cm, height 48 cm (D) length 220 cm, breadth 25 cm, height 40 cm

Last Answer : Answer: Option C

Pick up the incorrect statement from the following: (A) Space between the exterior walls of a warehouse and bag piles should be 30 cm (B) Cement bags should preferably be piled on wooden planks (C) Width and height of the pile should not exceed 3 m and 2.70 m respectively (D) None of these

Description : Pick up the incorrect statement from the following: (A) Space between the exterior walls of a warehouse and bag piles should be 30 cm (B) Cement bags should preferably be piled on wooden planks (C) Width and height of the pile should not exceed 3 m and 2.70 m respectively (D) None of these

Last Answer : Answer: Option D

Maximum height of low level cistern from top of W.C. pan should be (a) 65 cm. (b) 30 cm. (c) 8 (d) 120 cm. (e) 80 cm.

Description : Maximum height of low level cistern from top of W.C. pan should be (a) 65 cm. (b) 30 cm. (c) 8 (d) 120 cm. (e) 80 cm.

Last Answer : b) 30 cm. (c) 8

A plant with 30 cm or more circumference from human chest height is identified as (1) Herb (2) Shrub (3) Medicinal herbs (4) Tree

Description : A plant with 30 cm or more circumference from human chest height is identified as (1) Herb (2) Shrub (3) Medicinal herbs (4) Tree

Last Answer : Medicinal herbs

Which of the following provides the best description of an entity type? (A) A specific concrete object with a defined set of processes (e.g. Jatin with diabetes) (B) A value given to a particular attribute (e.g. height-230 cm) (C) A thing that we wish to collect data about zero or more, possibly real world examples of it may exist. (D) A template for a group of things with the same set of characteristics that may exist in the real world

Description : Which of the following provides the best description of an entity type? (A) A specific concrete object with a defined set of processes (e.g. Jatin with diabetes) (B) A value given to a ... template for a group of things with the same set of characteristics that may exist in the real world

Last Answer : Answer: D

A university's student body would be considered its __________ public, and parents, alumni, and trustees would be included as its __________ public. A)client; general B)specialised; general C)target; simple D)general; client E)target; market

Description : A university's student body would be considered its __________ public, and parents, alumni, and trustees would be included as its __________ public. A)client; general B)specialised; general C)target; simple D)general; client E)target; market

Last Answer : A)client; general

Anand takes 9 hours more than Babu to cover 150 km. Suppose the time taken by Anand is 30 minutes less than Babu he must double his speed. Then the speed of Anand will be: a) 7.64 km/hr. b) 7.43km/hr. c) 7.89 km/hr. d) 7.25 km/hr.

Description : Anand takes 9 hours more than Babu to cover 150 km. Suppose the time taken by Anand is 30 minutes less than Babu he must double his speed. Then the speed of Anand will be: a) 7.64 km/hr. b) 7.43km/hr. c) 7.89 km/hr. d) 7.25 km/hr.

Last Answer : C Let Anand 's speed be X km/hr. And let the time taken by Babu be Y. Since Anand takes 9+Y hours to cross 150km at X km/hr. i.e., 150 / X = 9+Y ---eqn1 And he takes Y - 1/2 hours to cross 150km at 2X km ... )/ 2x = 19/2 150/2X =19/2 150/X = 19 X = 7.89 Hence Anand 's speed is 7.89 km/hr.

Maria, Ivan, Leah, Julie, and Scott measured each other’s heights for health class The heights are 42 39 41, 37 and 39 inches Julie is 2 inches shorter than Leah Maria is 1 inch shorter than Scott and 2 inches taller than Leah How tall is each student?

Description : Maria, Ivan, Leah, Julie, and Scott measured each other’s heights for health class The heights are 42 39 41, 37 and 39 inches Julie is 2 inches shorter than Leah Maria is 1 inch shorter than Scott and 2 inches taller than Leah How tall is each student?

Last Answer : it is 5th grade math

Meaningful learning takes place when Options: A) Students Are Interested In Topic Taught. B) Explanations Are Given Within Reach Of Students. C) The New Content Being Taught Is Related To The Previous Knowledge Of The Student. D) Students Raise Questions And Get Them Clarified.

Description : Meaningful learning takes place when Options: A) Students Are Interested In Topic Taught. B) Explanations Are Given Within Reach Of Students. C) The New Content Being Taught Is Related To The Previous Knowledge Of The Student. D) Students Raise Questions And Get Them Clarified.

Last Answer : A) Students Are Interested In Topic Taught. 

The average age of 30 students in a class is 12 years. The average age of a group of 5 of the students is 10 years and that of another group of 5 of them is 14 years. The average of the remaining students is : a) 8 years b) 10 years c) 12 years d) 14 years e) 15 years

Description : The average age of 30 students in a class is 12 years. The average age of a group of 5 of the students is 10 years and that of another group of 5 of them is 14 years. The average of the remaining students is : a) 8 years b) 10 years c) 12 years d) 14 years e) 15 years

Last Answer : Let it be x . Then : 5×10+5×14+20×x=30×12 20x=360-120 or 20x=240 or x = 12 Answer: c)

What is the total number of students enrolled in all the three classes together ? (1) 150 (2) 125 (3) 140 (4) 160 (5) None of these

Description : What is the total number of students enrolled in all the three classes together ? (1) 150 (2) 125 (3) 140 (4) 160 (5) None of these

Last Answer : (5) None of these

A school has 4 sections of class 12, such that half the number of students of 1st section, 1/3rd of 2nd section, 1/4th of 3rd section and 1/5th of the 4th section are equal. If total number of students in class 12 is 420, find the number of students in sections 1st and 2nd. A) 180 B) 120 C) 240 D) 150 E) 260

Description : A school has 4 sections of class 12, such that half the number of students of 1st section, 1/3rd of 2nd section, 1/4th of 3rd section and 1/5th of the 4th section are equal. If total number of students in ... find the number of students in sections 1st and 2nd. A) 180 B) 120 C) 240 D) 150 E) 260

Last Answer : Answer: D Let number of students in 4 sections be A, B, C, D respectively. Then 1/2 of A = 1/3 of b = 1/4 of C = 1/5 of D So A : B : C : D = 2 : 3 : 4 : 5 [When A/2 = B/3 = C/4, then ratio A: B : C = 2 : 3 : 4] So students in 1st and 2nd section = [(2+3)/(2+3+4+5)] * 420 = 150

Rs.4900 was divided among a group of 150 children. If each girl gets Rs.50 and each boy gets Rs.25 then, the number of boys in the group is: (a) 100 (b) 102 (c) 104 (d) 105

Description : Rs.4900 was divided among a group of 150 children. If each girl gets Rs.50 and each boy gets Rs.25 then, the number of boys in the group is: (a) 100 (b) 102 (c) 104 (d) 105

Last Answer : (c) 104

The average weight of M,N and O is 168 kg. If P joins the group, the average weight of the group becomes 160 kg. If another man Q who weighs 6kg more than P replaces M, then the average of N,O,P and Qbecomes158 kg. What is the weight of M? A) 175 B) 140 C) 145 D) 150

Description : The average weight of M,N and O is 168 kg. If P joins the group, the average weight of the group becomes 160 kg. If another man Q who weighs 6kg more than P replaces M, then the average of N,O,P and Qbecomes158 kg. What is the weight of M? A) 175 B) 140 C) 145 D) 150 

Last Answer : D) M+N+O =168 * 3 =504 M+N+O+P=160*4=640……(1) P=136 kg and Q =142 kg N+O+P+Q =158*4 =632 N+O+P =632-142 =490…..(2) from 1 & 2, M=640-490 =150kg

Earth's atmosphere is an envelope of gases extending to a height of – (1) 100 km (2) 150 km (3) 200 km (4) 300 km

Description : Earth's atmosphere is an envelope of gases extending to a height of – (1) 100 km (2) 150 km (3) 200 km (4) 300 km

Last Answer : (3) 200 km Explanation: The atmosphere of the. Earth is an envelope of gases extending to a height of 200km.

The ground surface slopes 1 in 50 along a proposed railway embankment 150 m in length. The height of the embankment at zero chainage is 0.5 m, the width is 11 m and side slopes 2:1. If the falling gradient of the embankment is 1 in 150, the quantity of the earthwork calculated by Prismoidal formula, is (A) 3250 m3 (B) 3225 m3 (C) 3275 m3 (D) 3300 m3

Description : The ground surface slopes 1 in 50 along a proposed railway embankment 150 m in length. The height of the embankment at zero chainage is 0.5 m, the width is 11 m and side slopes 2:1. If the falling gradient ... calculated by Prismoidal formula, is (A) 3250 m3 (B) 3225 m3 (C) 3275 m3 (D) 3300 m3

Last Answer : (B) 3225 m3

Earth’s atmosphere is an envelope of gases extending to a height of (1) 100 km (2) 150 km (3) 200 km (4) 300 km

Description : Earth’s atmosphere is an envelope of gases extending to a height of (1) 100 km (2) 150 km (3) 200 km (4) 300 km

Last Answer : 200 km