Quantitative Aptitude Test - 6

The ratio of the present age of Riti and her father is 6 : 13. After 4 years the age of her father will be double of her age. what was the age of her father at the time of her birth?

Mohan purchased a car of Rs. 8000 and sold it after one year at a loss of 25%. Find the selling price of car:

Shikha invested a total of Rs. 1500 in two different schemes offering simple interest of 6% and 4% respectively. In two years' time, the scheme offering higher interest rate gives Rs. 100 more interest than the scheme offering the lower rate. What was the ratio of amount invested at higher interest rate to the other amount?

A can do a piece of work in 15 days while B alone can do it in 20 days. They worked together for 3 days then A left the work. In how many days will B finish the remaining work?

A helicopter covers a certain distance at a speed of 180 km/h in 6 hours. To cover the same distance in 10/3 hours, at what speed will it has to travel?

In a container the ratio of water and milk is 4 : 5. If the 15 litres of water is taken out and 21 litres of milk is added then the ratio of water and milk changes to 15 : 32. Find the initial quantity (in litres) of water in the container.

The difference between the two numbers is 335. When the larger number is divided by the smaller number, the quotient is 13 and the remainder is 11. What is the larger number?

If  where a and b are positive integers, then the value of  is closest to:

Which of the following numbers will completely divide