Quantitative Aptitude - Arithmetic Ability Questions

If 3P/7 = 4Q/11, then what is the ratio of P and Q respectively?

In ΔDEF measure of angle E is 90 deg. If cotD = 8/15, and DE = 16cm, then what is the length (in cm) of side EF?

Which smallest number must be subtracted from 400, so that the resulting number is completely divisible by 7?

If secA + tanA = a, then the value of cosA is

A car takes 5 hours to cover 100 kms distance at a particular speed whereas another car takes 3 hours to reach a particular distance at the same speed. Find the distance.

A prism has a regular hexagonal base with side 6 cm. If the total surface area of prism is 216√3 cm2, then what is the height (in cm) of prism?

The average of 10 numbers is 30. If at the time of calculation one number was wrongly taken as 36 instead of 69, then what will be the correct average?

The S.P of a washing machine is 1 1/3 of its C.P. Find the gain percent.