Quantitative Aptitude - Arithmetic Ability Questions

A man is 3 years older than his wife and four times as old as his son. If the son becomes 15 years old after 3 years. Then what is the present age of the wife?

A sum fetched a total simple interest of Rs. 7728 at the rate of 7% per year in 8 years. What is the sum?

Arun and Amit can do a piece of work in 9 days and 12 days respectively. If they work for alternate days and Amit starts the work first, then in how many days 35/36 parts of whole work will be completed?

A merchant changed his trade discount from 25% to 15%. This would increase selling price by

If (1 - cosA)/2 = x, then the value of x is

Find the circumference (in cm) of a circle of radius 10.5 cm

The first and last terms of an arithmetic progression are 37 and ­18. If the sum of the series is 114, then it has how many terms?

If 25% of an electricity bill is deducted, Rs 1788 is still to be paid. How much was the bill?