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.

Find the amount and the compound interest on ₹ 24,000 for 2 years at 10% per annum compounded yearly.

The S.I. on a certain sum in 3 years and at 8% per year is ₹ 720. The sum is:

1. ₹ 6,000

2. ₹ 9,000

3. ₹ 3,000

4. ₹ 4,000