₹ 900 is deposited every month in a recurring deposit account at 10% rate of interest, the interest earned in 8 months is :

1. ₹ 270

2. ₹ 2700

3. ₹ 27

4. ₹ 210

A man gets ₹ 1,404 as interest at the end of one year. If the rate of interest is 12% per annum in R.D. account, the monthly installment is :

1. ₹ 1200

2. ₹ 1800

3. ₹ 2400

4. ₹ 3600

₹ 800 per month is deposited in an R.D. account for one and half years. If the depositor gets ₹ 2,280 as interest at the time of maturity, the rate of interest is :

1. 20%

2. 15%

3. 10%

4. 12%