Mohan borrowed ₹ 16,000 for 3 years at 5% per annum compound interest. Calculate the amount that Mohan would have to pay at the end of 3 years.

Rekha borrowed ₹ 40,000 for 3 years at 10% per annum compound interest. Calculate the interest paid by her for the second year.

A man invests ₹ 9,600 at 10% per annum compound interest for 3 years. Calculate:

(i) the interest for the first year.

(ii) the amount at the end of the first year.

(iii) the interest for the second year.

(iv) the interest for the third year.

A person invests ₹ 5,000 for two years at a certain rate of interest compounded annually. At the end of one year, this sum amounts to ₹ 5,600. Calculate:

(i) the rate of interest per annum.

(ii) the amount at the end of the second year.