Quantitative Aptitude - Arithmetic Ability Questions

Two circles of equal radii intersect each other such that one circle will pass through the centre of the other circle. The distance between the centre of two circles is equal to 6 cm. Find the length (in cm) of common chord.

A water tank has two holes. The 1st hole alone makes the tank empty in 3 min and 2nd hole alone makes the tank empty in 5 min. If water leaks out at a constant rate, how long in minutes does it take if both the holes together empty the tank?

If 60 boys can finish a work in 15 days by working 8 hours a day, then how many hours a day should 72 boys work to finish that work within 20 days?

32% of a number is 80. What is the number?

If the length of the shadow of a vertical pole on the horizontal ground is √3 times its height, then the angle of elevation

An angle is 1/3 its supplementary angle. Find the measure of the angle?

ABCD is a cyclic trapezium in which AD || BC. If ∠ABC = 70°, then ∠BCD is