Description : An ore contains 12% copper. How many kilograms of the ore are required to get 69 kg of copper? -Maths
Last Answer : 579 kg is the answer
Description : The value of a machine depriciates at the rate of 10% per annum. If its present value is Rs 10000, what will be its value after 2 years? -Maths
Last Answer : answer:
Description : 96% of the cost of a TV is Rs 10464. What is its total cost? -Maths
Description : The excise duty on a certain item has been reduced to Rs 760 from Rs 950. Find the reduction per cent in the excise duy on that item. -Maths
Description : What percentage is (i) Rs 15 of Rs 120? (ii) 36 minutes of 2 hours? (iii) 8 hours of 2 days (iv) 160 metres of 4 km? (v) 175 mL of 1 litre? (vi) 25 paise of Rs 4? -Maths
Description : What amount is 10% more than Rs 90? -Maths
Description : Find: (i) 25% of Rs 76 (ii) 20% of Rs 132 (iii) 7.5% of 600 m (iv) 313% of 90 km (v) 8.5% of 5 kg (vi) 20% of 12 litres -Maths
Description : Rupesh secures 495 marks out of 750 in his annual examination. Find the percentage of marks obtained by him. -Maths
Description : Class 12 | Maths | Complex Numbers | Simplify the following complex numbers and find their modulus.
Last Answer : Class 12 | Maths | Complex Numbers | Simplify the following complex numbers and find their modulus.
Description : Maths | Complex Numbers | If √3 + i = r (cosθ + i sinθ), then find the value of θ in radian measure.
Last Answer : Solution :
Description : Class 12 | Maths | Complex Numbers | Simplify -2i ( 3 + i )( 2 + 4i )( 1 + i ) and obtain the modulus of that complex number.
Description : Class 12 | Maths | Complex Numbers | Express the complex numbers modulus-amplitude form - √3 + i
Description : Fill in the blanks: (a) 1 lakh = ………….. ten thousand. (b) 1 million = …………… hundred thousand. (c) 1 crore = ………………. ten lakh. (d) 1 crore = ……………. million. (e) 1 million = ……………. lakh. -Maths
Last Answer : a) 10 (b) 10 (c) 10 (d) 10 (e) 10
Description : A number is increased by 10% and the increased num\ber is decreased by 10%. Show that the net decrease is 1 -Maths
Description : The population of a town increases at 5% per annum. Its present population is 16000. What will be its population after 2 years? -Maths
Description : (i) What per cent of 1 kg is 125 g? (ii) What per cent of 80 m is 24 m? -Maths
Description : 70% of the students in a school are boys and the number of girls is 504. Find the number of boys in the school. -Maths
Description : What per cent of 84 is 14? -Maths
Description : If 12.5% of x is 6, find the value of x. -Maths
Description : Find the number whose 614% is 2. -Maths
Description : Find the number whose 13% is 65. -Maths
Description : Find: (i) 32% of 425 (ii) 1623% of 16 (iii) 6.5% of 400 (iv) 136% of 70 (v) 2.8% of 35 (vi) 0.6% of 45 -Maths
Description : Convert each of the following decimals into a percentage: (i) 0.6 (ii) 0.42 (iii) 0.07 (iv) 0.005 -Maths
Description : Convert each of the following into decimal form: (i) 45% (ii) 127% (iii) 3.6% (iv) 0.23% -Maths
Description : Convert each of the following ratios into a percentage: (i) 37 : 100 (ii) 16 : 25 (iii) 3 : 5 (iv) 5 : 4 -Maths
Description : Express each of the following as a ratio: (i) 43% (ii) 36% (iii) 7.5% (iv) 125% -Maths
Description : Convert each of the following fraction into a percentage: (i) 47 100 (ii) 9 20 (iii) 3 8 (iv) 8 125 (v) 19 500 (vi) 4 15 (vii) 2 3 (viii) 1 3 5 -Maths
Last Answer : We have the following: (i) 47100=47100×100% = 47% (ii) 920=920×100% =9×5%= 45% (iii) 38=38×100% =3×252%=752%=3712% (iv) 8125=8125×100%=8×45%=325%=6.4% (v) ... ;203%=803%=2623% (vii) 23=23×100%=2003%=6623% (viii) 135=85=85×100%=(8×20)%=160%
Description : Convert each of the following into a fraction: (i) 32% (ii) 614% (iii) 2623% (iv) 120% (v) 6.25% (vi) 0.8% (vii) 0.06% (viii) 22.75% -Maths
Description : Write each of the following as decimals: (a) 5 / 10 (b) 3 + 7 / 10 (c) 200 + 60 + 5 + 1 / 10 (d) 70 + 8 / 10 (e) 88 / 10 -Maths
Last Answer : (a) 5 / 10 = 0.5 (b) 3 + 7 / 10 = 3 + 0.7 = 3.7 (c) 200 + 60 + 5 + 1 / 10 = 265 + 0.1 = 265.1 (d) 70 + 8 / 10 = 70 + 0.8 = 70.8 (e) 88 / 10 = 80 / 10 + 8 / 10 = 8 + 0.8 = 8.8 (f) (g) 3 / 2 = (2 + 1) / ... + 0.5 = 1.5 (h) 2 / 5 = 0.4 (i) 12 / 5 = (10 + 2) / 5 = 10 / 5 + 2 / 5 = 2 + 0.4 = 2.4 (j) (k)
Description : Write each of the following as decimals: (a) Seven-tenths (b) Two tens and nine-tenths (c) Fourteen point six (d) One hundred and two ones (e) Six hundred point eight -Maths
Last Answer : (a) The decimal form of Seven-tenths is 7 / 10 = 0.7 (b) The decimal form of two tens and nine tenths is 20 + 9 / 10 = 20.9 (c) The decimal form of fourteen point six is 14.6 (d) The decimal form of one hundred and two ones is 100 + 2 = 102.0 (e) The decimal form of six hundred point eight is 600.8
Description : Due to a rise of `12%` in the price of mangoes a dealer gets 27 kg less for Rs. 24750. Find (a) The new price per kg of mangoes. (b) The orginal price
Last Answer : Due to a rise of `12%` in the price of mangoes a dealer gets 27 kg less for Rs. 24750. ... (b) The orginal price per kg of mangoes (approximately).
Description : The average monthly salary of 24 labours and 6 supervisor in a factory was Rs. 1200. When one of the supervisor whose salary was Rs. 1440, was replaced with a new supervisor, then the average salary of the team went down to 1160. What is the salary of the new supervisor? A) 170 B) 420 C) 390 D) 240
Last Answer : D) The total salary amount = 30 1200=36000 The salary of the exiting supervisor = 1440 Therefore, the salary of 24 labours and the remaining 5 supervisors: =36000-1440=34560 When a new ... 34800=1200 less than that of the old supervisor who left the company, which is equal to 1440−1200=240
Description : Deepa decided to donate 16% of her monthly salary to an NGO. On the day of donation she changed her mind and donated Rs. 6,567/- which was 75%of what she had decided earlier. How much is Deepa’s monthly salary? a) Rs. 54,725/- b) Rs. 58,756/- c) Rs. 56,700/- d) Rs. 55,696/- e) Rs. 52,696/-
Last Answer : Let the Deepa Monthly Salary = x Deepa decided to donate 16% of her monthly salary. On the day of donation she changed. So, 75%of she had decided earlier of 16% 16 × 75/100 = 12% Therefore = 12%= Rs. 6567 100% = Rs .6567 × 100 / 12 x = Rs. 54725 Answer: a)
Description : The ratio of the monthly salaries of A and B is in the ratio 15 : 16 and that of B and C is in the ratio 17 : 18. Find the monthly income of C if the total of their monthly salary is Rs 1,87,450. A) Rs 66,240 B) Rs 72,100 C) Rs 62,200 D) Rs 65,800 E) Rs 60,300
Last Answer : Answer: A A/B = 15/16 and B/C = 17*18 So A : B : C = 15*17 : 16*17 : 16*18 = 255 : 272 : 288 So C’s salary = [288/(255+272+288)] * 1,87,450= Rs 66,240
Description : The average monthly salary of directors & office boys of an organization Rs. 3750. Then the average salary of all directors is Rs. 6000 while that of all office boys is Rs. 3000 per month. If there are 120 employees in the ... find the ratio of manager and office boy. A) 2:5 B) 3:1 C) 1:3 D) 5:2
Last Answer : C) let the number of director be X and office boy be 120-x total salary of director and office boy = 120*3750 = Rs.450000 total salary of director = 6000x total salary of office boy = 3000* (120 - ... director number of office boy = 120-30 = 90 ratio of director to office boy = 30:90 = 1:3
Description : By selling a telephone for Rs. 2400, a shopkeeper make a profit of 25%. Then, his profit percentage, if he had sold it for Rs. 2016, is ? (a) 10% (b) 6.25% (c) 6.5% (d) 5% (e) 12%
Last Answer : (d) 5%
Description : A shopkeeper sells two watches for Rs 308 each. On one watch he earns 12% profit and on the others he suffers 12% loss. His profit or loss in the entire transaction was: 1. 1(11/25)% loss 2. 1(11/25)% gain 3. 3(2/25)% loss 4. 3(2/25)% gain
Last Answer : 3. 3(2/25)% loss
Description : .A shopkeeper sells two watches for Rs 308 each. On one watch he earns 12% profit and on the others he suffers 12% loss. His profit or loss in the entire transaction was: 1. 1(11/25)% loss 2. 1(11/25)% gain 3. 3(2/25)% loss 4. 3(2/25)% gain
Last Answer : . 3(2/25)% loss
Description : Arun and Bharat started a business with investments of Rs.10000 and Rs.15000 respectively. Arun being a working partner gets Rs.100 every month as salary from the profit. At the end of one year the business makes a ... the total share of Arun out o this amount (in Rs.) a)2880 b)2640 c)3240 d)2760
Last Answer : b)2640
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..
Description : .Kamya purchased an item for Rs 46,000 and sold it at a loss of 12 per cent. With that amount she purchased another item which he sold at a gain of 12%. What was her overall gain/loss? 1. Loss of Rs 662.40 2. Profit of Rs 662.40 3. Loss of Rs 642.80 4. Profit of Rs 642.80
Last Answer : 2. Profit of Rs 662.40
Description : Rahul invested a certain amount in buying Rs. 25 shares of a company, which pays a dividend of 12%. If the earns 10% per annum on his investment, then
Last Answer : Rahul invested a certain amount in buying Rs. 25 shares of a company, which pays a dividend of ... , then find the market value of each share.
Description : Mr. Sachin spent 20% of his monthly income on food and 15% on children's education. 40% of the remaining he spent on entertainment and transport together and 30% on the medical. He is left with an amount of Rs.8, 775/- after ... 000/- b) Rs.46,000/- c) Rs.36, 000/- d) Rs.29,000/- e) None of these
Last Answer : Let the total income of Mr.Sachin be 100 According to question, 100 – 20 –15 = 65 × 60/100 × 70/100 = 27.3. 27.3 = 100 8775 = 100/27.3 × 8775 = Rs. 32142. Answer: e)
Description : The ratio of two persons A and B salaries in the ratio 12:7 if 12% increased salary yearly then what will be the B Salary after 2 yrs if salary of A is 12000. A) 7808 B) 8700 C) 7,500 D) 8781
Last Answer : Answer: D 12:7 = 12,000 : 7,000 12% = B = 840……1st yr and B = 941 …..2nd yr New inc B = 7000+840+941 = 8781
Description : Are you a good typist?
Last Answer : I took typing in High School. One of the most valuable skills I have.
Description : What does 'steno typist' mean ?
Last Answer : The word 'steno typist' means - short scribe.
Description : What is the best keyboard for a touch typist accustomed to old fashioned manual typewriter. My fingers slide off of most computer keyboard keys and I find keyboard uncomfortable.?
Last Answer : The Steampunk Workshop, http://steampunkworkshop.com/keyboard.shtml, is a company that manufactures custom keyboards and they will make them to be like old type writers if you choose for them to do so.
Description : Rupesh invests Rs. 45,000 partly in Rs. 150 shares at Rs. 180 for 8% and partly in Rs. 75 shares at Rs. 135 for 12%. If the annual income from the inv
Last Answer : Rupesh invests Rs. 45,000 partly in Rs. 150 shares at Rs. 180 for 8% and partly in Rs. 75 ... investments made by Rupesh in the two types of sphares.
Description : How much should a man invest in 12%, Rs. 150 shares of a company available at a premium of Rs. 30, if the annual income earned is to be Rs. 3,600 ?
Last Answer : How much should a man invest in 12%, Rs. 150 shares of a company available at a premium of Rs. 30, if the annual income earned is to be Rs. 3,600 ?
Description : Which is a better investment, (A) Rs. 60 shares at Rs. 75 paying a dividend of 10% or (B) Rs. 100 share at Rs. 120 paying a dividend of 12% ?
Last Answer : Which is a better investment, (A) Rs. 60 shares at Rs. 75 paying a dividend of 10% or (B) Rs. 100 share at Rs. 120 paying a dividend of 12% ?