A certain lent out at simple interest amount to Rs.575 in 3years and to Rs.625 in 5 years .Then the rate of interest is:

Find discount in percent when

M.P. = Rs 1600 and S.P. = Rs 1180`

At a certain rate of simple interest, a certain sum doubles itself in 10 years. It will triple itself in ________________

Simplify ratio 30:72

Change 1/4 into percent.

A man invested one third of his capital at 7% ;one fourth at 8% and the remainder at 10%.if his annual income is Rs.560, the capital is

Find the difference between compound interest and simple interest on a sum of Rs.25000 for 3 years at the rate of 4% per annum .

Marks of A and B are respectively 30% and 37% less than C. How much per cent of marks of B is less than A?

A money lender finds that due to a fall in the rate  of interest from 8% to % his yearly income diminishes by Rs.615. His capital is?

A sells his goods 10% cheaper than B and 10% dearer than C.if a customer of B purchases goods worth Rs 100 from C,how much will he save?

A man borrows Rs.12500 from a bank at 20% compound interest. At the end of every year he pays Rs.2000 as part of repayment. How  much does he still owe to the bank after three such instalments?