Quantitative Aptitude - Arithmetic Ability Questions

If x - y = 6 and xy = 40, then find x2 + y2 ?

The amount received at 10% per annum compound interest after 3 yrs is Rs 10,648. What was the principal (in Rs)?

A's income is 25% more than B's income. B's income is what percent of A's income?

If 9x+2 = 240 + 9x, the value of (8x)x is

In triangle ABC, AB = 8 cm, angle A is bisected internally to intersect BC at D. BD = 6 cm and DC = 7.5 cm. What is the length of CA?

Calculate the area (in cm2 ) of a circle of radius 10.5 cm.

What is the value of [1 – sin (90 – 2A)] / [1 + sin (90 + 2A)]?

If tan A = 1/2 and tan B = 1/3, then what is the value of tan (2A + B)?