Quantitative Aptitude - Arithmetic Ability Questions

The price of an article is cut by 7%, to restore it to its original value, the new price must be increased by

If sin(A/2) = x, then the value of x is

If cosAcotA/(1 -­ sinA) = x, then the value of x is

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.

A helicopter, at an altitude of 1500 m, finds that two ships are sailing towards it, in the same direction. The angles of depression of the ships as observed from the helicopter are 60° and 30°respectively. Distance between the two ships, in metres is

Reflection of the point (2,­7) in the y­axis is

If the population of a town increases by 25% in the first year and increases by 36% in the second year, then what is the average rate (in percentage)of increase in the population?