A sum of money was lent at 10% per annum, compounded annually, for 2 years. If the interest was compounded half - yearly, he would have received Rs.660.75 more. Find the sum.

A sum of Rs.13,000 is to be paid back in 2 equal annual instalments. How much is each instalment if the interest is compounded annually at 8 % per annum?

A person lent certain sum of money at 5% per annum simple interest and in 15 years the interest amounted to Rs 250 less than the sum lent. What was the sum lent (in Rs)?

At what percent per annum will Rs. 3000 amounts to Rs. 3993 in 3 years if the interest is compounded annually?  

The compound interest on Rs.16, 000 for 9 months at 20 % per annum, interest being compounded quarterly, is

A person invested Rs 3000 on compound interest for two years. If the rate of interest is the 25 % for the first year and 20 % for the second year. Then find the CI?

A sum of money becomes eight times in 3 years, if the rate is compounded annually. In how much time will the amount at the same compound rate become sixteen times? 

If the difference between the compound interest and simple interest on a certain sum at 5% per annum for 3 years is Rs.11.40, what is the approximate sum?