Find the compound interest on Rs. 15625 for 9 months, at 16% per annum, compounded quarterly.

Romesh borrowed a sum of Rs. 245760 at 12.5% per annum, compounded annually. On the same day, he lent out his money to Ramu at the same rate of interest, but compounded semi-annually. Find his gain after 2 years.

Find the amount that David would receive if he invests Rs. 8192 for 18 months at 12_c% per annum, the interest being compounded half-yearly.

Rekha deposited Rs. 16000 in a foreign bank which pays interest at the rate of 20% per annum compounded wuarterly, find the interest received by Rekha after one year

Find the amount of Rs. 12500 for 2 years compounded annually, the rate of interest being 15% for the first year and 16% for the second year.