Quantitative Aptitude - Arithmetic Ability Questions

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

Find the number that is as much greater than 39 as is less than 79.

A man misses a train by 1 hour if he travels at a speed of 4 kmph. If he had increased his speed to 5 kmph, he would gave still missed the train by 24 minutes. At what speed should he have travelled so that he reached the station exactly on time?

When Vijay sells 12 pens, he gains the selling price of 2 pens. Calculate his % profit?

Find the missing number?

If n + n2 + n4 + n8 = 45, then find the value of 'n' which will satisfy the equation.

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?

What is the reflection of the point (-1 , 3) in the line x = -4?