Mr. Sharma lends ₹ 24,000 at 13% p.a. simple interest and an equal sum at 12% p.a. compound interest. Find the total interest earned by Mr. Sharma in 2 years.

Peter borrows ₹ 12,000 for 2 years at 10% p.a. compound interest. He repays ₹ 8,000 at the end of first year. Find:

(i) the amount at the end of first year, before making the repayment.

(ii) the amount at the end of first year, after making the repayment.

(iii) the principal for the second year.

(iv) the amount to be paid at the end of the second year to clear the account.

A certain sum of money, invested for 5 years at 8% p.a. simple interest, earns an interest of ₹ 12,000. Find:

(i) the sum of money.

(ii) the compound interest earned by this money in two years at 10% p.a. compound interest.

Find the amount and the C.I. on ₹ 12,000 in one year at 10% per annum compounded half-yearly.