Quantitative Aptitude - Arithmetic Ability Questions

A man has some hens and some cows. If the total number of heads of hens and cows together is 50 and the nunber of feet of hens and cows together is 142, then the number of cows is

For the figure given below, find the value (in degrees) of 2∠A + ∠B.

Compute : (50 + 0.5 x 20) / 0.7

One of four words is a class of which the other three belong. Identify the class.

Two circles touch each other at point X. Two common tangents of the circles meet at point P and none of the tangents passes through X. These tangents touch the larger circle at points B and C. If the radius of the larger circle is 15 cm and CP = 20 cm, then what is the radius (in cm) of the smaller circle?

What is the effective discount (in %) on two successive discounts of 20% and 10%?

The midpoints of AB and AC of a triangle ABC are X and Y respectively. If BC+XY=12 units, then BC­XY is

The length of the two adjacent sides of a rectangle inscribed in a circle are 5 cm and 12 cm respectively. Then the radius of the circle will be