On a certain sum, the S.I. for 2 years is ₹ 2400. If the rate of interest is 10% p.a., then :

the amount in 2 years, at compound interest is :

1. ₹ 14520

2. ₹ 12000

3. ₹ 12120

4. ₹ 24000

If the interest is compounded half-yearly, calculate the amount when principal is ₹ 7400; the rate of interest is 5% per annum and the duration is one year.

A man borrowed ₹ 16000 for 3 years under the following terms :

20% simple interest for the first 2 years.

20% C.I. for the remaining one year on the amount due after 2 years, the interest being compounded half-yearly.

Find the total amount to be paid at the end of three years.

What sum of money will amount to ₹ 27783 in one and a half years at 10% per annum compounded half-yearly ?