Quantitative Aptitude - Arithmetic Ability Questions

Pipes A, B, and C are attached to an empty cistern. While the first two can fill the cistern in 4 and 10 hours, respectively, the third can drain the cistern, when filled, in 6 hours. If all the three pipes are opened simultaneously when the cistern is three-fifth full, how many hours will be needed to fill the cistern?

The area of a semicircle is 1925 sq.cm. Calculate its perimeter (in cm).

In ΔABC, ∠B=90 deg and BC= √3 AB. Find the measurement of ∠A

Convert decimal number 101 to binary.

A shopkeeper cheats to the extent of 8% while buying and selling fruits, by using tampered weights, his total gain in percentage is

If r sinθ=3 and r cosθ=1, then the values of r and θ are: (0°⩽θ≤90°)

From a point on a bridge across the river, the angles of depression of the banks on opposite sides of the river are 30° and 45° respectively. If the bridge is at a height of 2.5m from the banks, then the width of the river is (take √3 = 1.732)

The area of a square is equal to its side, if the side is 1 unit.