Quantitative Aptitude - Arithmetic Ability Questions

Vishal is 20 years younger to Arya. Twelve years hence Arya's age will be 1.25 times that of Vishal. Aryais now ......... years old.

If cosA + cos2A = 1 then the value of sin2A + sin4A is

A train travelling at 76 kmph crosses a 450 m long platform in 27 seconds. What is the length of the train?

What is the distance between the points (11,-5) and (-1,0)?

If curved surface area of a cylinder is 616 sq cm and height is 14 cm, find its radius?

The profit (in Rs.) after selling an article for Rs.524 is the same as the loss (in Rs.) after selling it for Rs.452. The cost price of the article is:

Six years ago, the ratio of the two persons P and Q was 3 : 2. Four years hence the ratio of their ages will be 8 : 7. What is P's age?

The average height of 50 bats is 126 cm. Some bats of average height 120 cm are removed. If the new average height is 130 cm, then how many bats are remaining?