Quantitative Aptitude - Arithmetic Ability Questions

Two points P and Q are at the distance of x and y (where y > x) respectively from the base of a building and on a straight line. If the angles of elevation of the top of the building from points P and Q are complementary, then what is the height of the building?

The value of x for which the expressions 7x + 13 and 13x - 7 become equal is _____

An angle is smaller than its supplementary angle by 70°. What is the measure of the angle?

Three numbers are in the ratio of 3:5:10 and their LCM is 630. Find their HCF.

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

A shopkeeper increases the price of an object by 40% and then sells it at 25% discount on the marked price. If the selling price of such an object be Rs. 2100, its cost price for the shopkeeper was ?

Divide 32 into two parts such that the sum of the square of the parts is 674. What is the value of the parts?

In the given figure, PQ = 30, RS = 24 and OM = 12, then what is the value of ON?