From a container having pure milk, 20% is replaced by water and the process is repeated thrice. At the end of the third operation, the milk is `40 %\ p u r e` b. `50 %\ p u r e` c. `51. 2 %\ p u r e` d. `58. 8 %\ p u r e`

A container having pure milk, 30% is replaced by water and the process is repeated three times. At the end of the third operation, what will be the intensity of milk?

There is pure milk in a vessel . 20% of milk is replaced with water If this process is repeated 3 times , what is the percentage of milk at the end?

The production of a company has ups and downs every year. The production increases for two consecutive years consistently 'by 15% and in the third year it decreases by 10%. Again in the next two years it increases by 15% each year and decreases by 10% in the third year. If we start counting from the year 2008, approximately what will be the effect on production of the company in 2012? 27 %\ i n c r e a s e b. 32 %\ i n c r e a s e c. 37 %\ i n c r e a s e d. 42%\ i n c r e a s e e.52%\ i n c r e a s e

In an examination X secures 58% marks and Y secures 105 marks less than X. If the maximum marks were 700, then what percent of marks did Y secure? 42 p e r c e n t b. 4 3 p e r c e n t c. 52 p e r c e n t d. none of these

The demand for good rises by 20% as a result of fall in its price. Its P.e_(D)is (-) 0.8 . Calculate the percentage fall in price.

The value of a flat worth Rs. 500000 is depreciating, at the rate of 10% p.a. In how many years will it' value be reduced to Rs. 364500? 3\ y e a r s b. 4\ y e a r s c. 5\ y e a r s d. 6\ y e a r s

P.e_(D) of a good is (-)1. Calculate the % change in price that will raise the demand from 20 units to 20 units.

The firm uses the following function to calculate the production output (P O): P O=5. 3 C^2L^(15), where C= capital invested and L=labour employed. If the capital invested C increases by 20 percent, the change in PO will be 20% d e c r e a s e b. 32 % i nc r e a s e c. 44 % i n c r e a s e d. 56% i n c r e a s e

A 27 quartz capacity car radiator is filled with 18% alcohol solution. How many quartz be drained and then be replaced by a 90% alcohol solution for resulting solution to contain 42% alcohol? 7 q u a r t z b. 9 q u a r t z c. 11 q u a r t z d. 14 q u a r t z

In a survey of a city, it was found that 90 percent of the people in the city own a refrigerator and 15 percent own a washing machine. If everybody owns at least one appliance, what percentage owns both? 5 p e r c e n t b. 8 p e r c e n t c. 10 p e r c e n t d. none of these