The difference between a number and its three-fifth is 50. What is the number?

Sazu is younger than Rabi by 4 years. If their age ratios are of 7 : 9 respectively, how pld is Sazu?

If 120 is 20% of a number, then 120% of that number will be:

A's income is 25% more than B's income. B's income in terms of A's income is:

The ratio of the cost price and the selling prices is 4:5. The profit percent is :

The ratio of three numbers is 3 : 4 : 5 and the sum of their squares is 1250. The sum of the numbers is

A, B and C enter into a partnership with a capital in which A's contribution is Tk. 10,000. If out of a total...