Ramesh invested ₹12800 for three years at the rate of 10% per annum compound interest. Find :

(i) the sum due to Ramesh at the end of the first year.

(ii) the interest he earns for the second year.

(iii) the total amount due to him at the end of three years.

The simple interest on a sum of money for 2 years at 12% per annum is ₹1380. Find :

(i) the sum of money.

(ii) the compound interest on this sum for one year payable half-yearly at the same rate.

Mr. Lalit invested ₹5000 at a certain rate of interest, compounded annually for two years. At the end of first year it amounts to ₹5325. Calculate :

(i) the rate of interest.

(ii) the amount at the end of second year, to the nearest rupee.

A man invests ₹5000 for three years at a certain rate of interest, compounded annually. At the end of one year it amounts to ₹5600. Calculate :

(i) the rate of interest per annum.

(ii) the interest accrued in the second year.

(iii) the amount at the end of the third year.