Quantitative Aptitude - Arithmetic Ability Questions

Shrenik switched on a bulb at 2 : 39 : 40 hours and switched it off on the same day at 12 : 30 : 34 hours. For how long was the bulb in switched-on mode?

At what rate of compound interest per annum will a sum of Rs 20000 become Rs 25088 in 2 years?

What is the simplified value of 0.072+0.292-0.02030.073+0.293

If sin ­-330° = x, then the value of x is

Breadth of a rectangle is equal to the diagonal of the square whose side is 2.5√2 cm. Ratio between length and breadth of rectangle is 3 : 1. Find the area of the rectangle (in cm2).

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)

Among three numbers, the first is twice the second and thrice the third, If the average of three numbers is 517, then what is the difference between the first and the third number?

If 4x - 5y = -37 and 7x + y = -16, then x - y = ______