If X is 90% of Y, then what percent of X is Y ?

Two discount of 8% and 12% are equal to a single discount of:

The square of a positive number is 2000% greater than the number itself, then the square of that number is :

A person's salary is decreased by steps of 20%, 15% and 10%. Approximately by what percent should the reduced salary be …

If A exceeds B by 40%, B is less than C by 20%, then A : C is

Three candidates contested an election and received 1136, 7636 and 11628 votes respectively. What percentage of the tota…

The population of a town is 1771561. If it had been increasing at 10% per annum, its population 6 years ago was :

40% of 60% of $$\frac{3}{5}$$th of a number is 504. What is 25% of $$\frac{2}{5}$$th of that number ?