Quantitative Aptitude - Arithmetic Ability Questions

A moving train passes a platform 50m long in 14 seconds and a lamp post in 10 seconds. The speed of the train (in km/h) is :

Simple interest on a sum for six months at 5% per annum is Rs 65.5.What is the value (in Rs) of sum ?

If a - b = 2 and ab = 24, then what is the value of a3- b3?

How many times in a week does both the hands of the clock will coincide with each other?

Find measure of central angle of the arc whose length is 22 cm and radius of the circle is 28 cm?

The price of an article is cut by 36%, to restore to its original value, the new price must be increased by

Two numbers are in the ratio 2:5 and their HCF is 18. Their LCM is

What is the rate of interest (in %) if simple interest earned on a certain sum for the 3rd year is Rs 2,000 and compound interest earned in 2 years is Rs 4,160?