Doubts of compound interest

Computation of compound interest.

A sum of Rs. 10500 becomes Rs. 17745 in 2 years at the rate of compound interest. If the interest is compounded annually then what will be the rate of interest?

What is compound interest

A sum of Rs. 3000 is invested on compound interest (compounded anually) at the rate of interest 20% per annum What is the compound interest for 2 years ?

Rs. 2000 was lent at 40% per annum at simple interest for 1 year. If interest on it was at compound interest and compounded quuarterly, then the amount obtained would be ___.

What is the compound interest on a sum of Rs. 13,000 at 15% p.a .in 2 yers ,if the interest in compounded 8- monthly ?