Quantitative Aptitude - Arithmetic Ability Questions

If 13x2 = 172 - 92, find the value of x?

What is the value of 5.6x0.36+0.42x3.20.8 x 2.1 ?

The ratio of the amount of work done by (x-1) labours in (x+1) days and that done by (x+1) labours in (x+2) days is 5 : 6. Then the value of x is

The compound interest on Rs. 24000 at 10% per annum for 11⁄2 years, interest being compounded semi­annually is

The areas of a circle and square are equal. What is the square of the ratio of length of diameter to the length of diagonal?

If the angle of elevation of the top of a pillar from the ground level is raised from 30° to 60°, the length of the shadow of a pillar of height 503 will be decreased by

A train 240 meters in length crosses a telegraph post in 16 seconds. The speed of the train is?

A bus moves at a speed of 84 km/hr after repairing and moves at a speed of 56 km/hr before repairing. It covers 2x distance in 8 hours after repairing.How much time (in hours) will it take to cover x distance before repairing?