The mean of four numbers a, b, c, d is 100. If c = 70, then the mean of the remaining numbers is (A) 30 (B) 85/2 (C) 170/3 (D) 110

The mean of four numbers a, b, c, d is 100. If c = 70, then the mean of the remaining numbers is (A) 30 (B) 85/2 (C) 170/3 (D) 110
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The mean marks obtained by a class of 40 students is 65. The mean marks of half of the students is found to be 45. The mean marks of the remaining students is (A) 85 (B) 60 (C) 70 (D) 65

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Last Answer : Answer: A

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Anil played 8 cricket matches. The mean (average) of the runs was found to be 80. After playing four more matches, the mean of the runs of all the matches was found to be 70. The total runs made in the last four matches is (A) 400 (B) 300 (C) 200 (D) 100

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Last Answer : Answer: C

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Last Answer : Answer: C Four consecutive even number = x, x+2,x+4,x+6. According to question, x+x+2x+4x+6/4=27. 4x+12/4 = 27 4x =108 - 12=96. x=96/4=24. Hence , The largest number =x+4= 24+6=30. The numbers are 24, 26 28, and 30 , which addition is 108 which average is 27, So biggest is 30

In a bag there arc coins of 25 paise and 10 paise in the ratio of 6 : 17. If the bag contains Rs. 16 then the number of 10-paise coins is a) 30 b) 40 c) 70 d) 85 e) 65

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121 ? 113 138 89 170 49 a) 125 b) 110 c) 122 d) 120 e) 133

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P2O5 content in superphosphate is about __________ percent. (A) 30-35 (B) 15-20 (C) 65-70 (D) 85-90

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Last Answer : (B) 15-20

Account Receivables lag impacts sales. At no credit terms, the appeal falls to about ______ %, at 30 days, appeal is _____ %, at 60 days, appeal is ______%. a. 98.5, 92, 65 b. 65, 92, 98.5 c. 70, 85, 99 d. none of the above, there is no impact

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Last Answer : b. 65, 92, 98.5

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Last Answer : 85 mv

The minimum width of a stair in residential buildings, is (A) 55 cm (B) 70 cm (C) 85 cm (D) 100 cm

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Last Answer : (B) reducing the claim made on the basis of the premises affirmed.

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Last Answer : (b) Rs. 85,000

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Last Answer : (B) 85

501/58 * 291/101 ÷ 31/155 = ? a) 140 b) 125 c) 95 d) 85 e) 110

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Last Answer : Answer: b)

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Last Answer : Answer: D

At present, a mother is 3 times older than her son. After 5 years, the sum of their ages will be 70 years. The age of the mother after 10 years will be (A) 40 (B) 55 (C) 45 (D) 60

Description : At present, a mother is 3 times older than her son. After 5 years, the sum of their ages will be 70 years. The age of the mother after 10 years will be (A) 40 (B) 55 (C) 45 (D) 60

Last Answer : 45

How many prime numbers are there between 150 and 170?

Description : How many prime numbers are there between 150 and 170?

Last Answer : four151, 157, 163, 167

If A stands for 5, B for 6, C for 7, D for 8 and so on, then the following numbers stand for 17, 19, 20, 9 and 8 : (A) PLANE (B) MOPED (C) MOTOR (D) TONGA

Description : If A stands for 5, B for 6, C for 7, D for 8 and so on, then the following numbers stand for 17, 19, 20, 9 and 8 : (A) PLANE (B) MOPED (C) MOTOR (D) TONGA

Last Answer : Answer: B If A stands for 5, B for 6, C for 7, D for 8 and so on, then E=9, F=10, G=11, H=12, I=13, J=14, K=15, L=16, M=17, N=18, O=19, P=20. Therefore 17, 19 , 20, 9, 8 = M O P E D.

Four pipes can fill a reservoir in 15, 20, 30 and 60 hours respectively. The first one was opened at 6 AM, second at 7 AM, thir da t 8 AM and the fourth at 9 AM. When will the reservoir be filled ? (A) 11 AM (B) 12 Noon (C) 1 PM (D) 1:30 PM

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Last Answer : Answer: C

A group of students of arithmetic mean of the marks in a test was 63. The brightest 30% of them secured a mean score of 70 and the dullest 15% a mean score of 41. The mean score of remaining 55 % is A) 63.675 B) 61.785 C) 65.181 D) 66.67

Description : A group of students of arithmetic mean of the marks in a test was 63. The brightest 30% of them secured a mean score of 70 and the dullest 15% a mean score of 41. The mean score of remaining 55 % is A) 63.675 B) 61.785 C) 65.181 D) 66.67

Last Answer : C) Let the requird mean score be ‘x’ Then (30*70)+(15*41)+55x = 63*100 2100+615+55x=6300 2715+55x=6300 55x=3585 X=65.181

An autoclave normally sterilizes material by heating the material to_____°C for minute‘s at__________ psi. a. 100; 10 30 b. 121.5; 15; 15 c. 100; 15; 0 d. 110; 30; 5

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Last Answer : b. 121.5; 15; 15

what is 30 divided by 170?

Description : what is 30 divided by 170?

Last Answer : 0.1765

What number does 170 and 30 go into?

Description : What number does 170 and 30 go into?

Last Answer : 170 and 30 go into all multiples of their lowest commonmultiple:lcm(30, 170) = 510→ 170 and 30 go into all the multiples of 510, namely:510, 1020, 1530, 2040, 2550, 3060, 3570, 4080, 4590, 5100, ... 44370, 44880, 45390, 45900, 46410, 46920, 47430,47940, 48450, 48960, 49470, 49980, 50490, 51000, ...

Two stations X and Y are 170 km apart on a straight line. One train starts from X at 6 a.m. and travels towards Y at 25 kmph. Another train starts from Y at 8 a.m. and travels towards X at a speed of 35 kmph. At what time will they meet? a) 11. 30 a.m b) 10.30 a.m c) 11 a.m d) 9 a.m e) 10 am

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Last Answer : e Suppose they meet z hours after 6 a.m. Distance covered by X in z hours = 25× z km. Distance covered by Y in (z - 2) hours = 35(z - 2) km. Therefore 25z + 35(z- 2) = 170 60z = 240 x = 4. So, they meet at 10 a.m.

The distance between salem and trichy is 170 km. A bus starts from salem at 6 a.m. and travels towards trichy at 20 km/hr. Another bus starts from trichy at 7 a.m. and travels towards salem at 30 km/hr. At what time will they meet? a) 7a.m b) 8a.m c) 9a.m d) 10a.m

Description : The distance between salem and trichy is 170 km. A bus starts from salem at 6 a.m. and travels towards trichy at 20 km/hr. Another bus starts from trichy at 7 a.m. and travels towards salem at 30 km/hr. At what time will they meet? a) 7a.m b) 8a.m c) 9a.m d) 10a.m

Last Answer : D Assume that they meet x hours after 6 a.m. Then, Bus 1, starting from salem, travels x hours till the bus meet. Distance travelled by bus 1 in x hours =20x km bus 2, starting from trichy , travels (x−1) hours ... +30=50x 200=50x X=4 Hence, the bus meet 4 hours after 6 a.m., i.e. at 10a.m

Noise level heard at a distance of about 100 metres from a jet engine with after burner is about __________ decibels. (A) 120 (B) 140 (C) 170 (D) 200

Description : Noise level heard at a distance of about 100 metres from a jet engine with after burner is about __________ decibels. (A) 120 (B) 140 (C) 170 (D) 200

Last Answer : (C) 170

There are 10 true-false questions in an examination. Then these questions can be answered in (A) 20 ways (B) 100 ways (C) 240 ways (D) 1024 ways

Description : There are 10 true-false questions in an examination. Then these questions can be answered in (A) 20 ways (B) 100 ways (C) 240 ways (D) 1024 ways

Last Answer : Answer: A If you have 10 questions, and 2 choices per question, then you have 2^10 =1024 possibilities.

The average age of the students in a class is 14. The average age of half of the students in that class and the class teacher is 16. The average age of the remaining half of the students is 15. What is the number of students in that class? a) 20 b) 70 c) 80 d) Cannot be determined e) None of these

Description : The average age of the students in a class is 14. The average age of half of the students in that class and the class teacher is 16. The average age of the remaining half of the students is 15. What is the number of students in that class? a) 20 b) 70 c) 80 d) Cannot be determined e) None of these

Last Answer : Because total no. of students is not known we cannot find the answer. Answer: d)