Quantitative Aptitude - Arithmetic Ability Questions

What is the value of tan­ -240°?

If 310 × 272 = 92 × 3n then the value of n is

When a discount of 50% is given on a shirt, the profit is 25%. If the discount is 10%, then the profit is

If the radius of a circle is increased by 31% its area increases by ______.

Two students appeared for an examination. One of them secured 20 marks more than the other and his marks were 55% of the sum of their marks. The marks obtained by them are

x and y are two numbers such that their mean proportion is 16 and third proportion is 128. What is the value of x and y?

Rs. 782 is divided into 3 parts in the ratio 12:23:34, the first part is 

What is the angle between the two hands of a clock when the time shown by the clock is 8 p.m.?(in degrees)