Compound Interest

1.		The least number of complete years in which a sum of money put at 20% compound interest will be more than doubled is:

3

2

5

4

2.		Simple interest on a certain sum of money at a certain rate of interest is Rs 100 in 2.5 years. But the compound interest on the same sum of money at the same rate of interest compounded annually in 2 years is Rs 85. Find the sum?

300

310

320

640

3.		A money lender borrows money at 5% per annum and pays the interest at the end of the year. He lends it at 8% per annum compounded half yearly and receives the interest at the end of the year. In this way , he gains Rs 632 a year. The amount of money he borrows is:

20000

21000

22500

15000

4.		The difference between simple interest and compound interest on Rs. 600 for 1 years at 10% per annum, reckoned half yearly is?

Nil

Rs. 6.60

Rs. 4.40

Rs. 1.50

5.		The Simple interest on a certain sum for 2 years at 10% per annum is Rs. 90. The corresponding compound interest is:

Rs. 99

Rs. 94.50

Rs. 95.60

Rs. 108

6.		The difference between simple and compound interest on a certain sum of money for 2 years at 4 per cent per annum is Re.1. The sum of money is:

Rs.600

Rs.625

Rs.650

Rs.500

7.		A sum of money placed at compound interest doubles itself in 4 years. In how many years will it amount to eight times itself?

16

8

12

20

8.		The difference between compound Interest and simple interest on an amount of Rs. 30,000 for 2 years is Rs. 192. What is the rate of interest per annum?

8%

11%

12%

12.5%

9.		Amit borrowed a certain sum from Babu at a certain rate of simple interest for 2 years. He lent this sum to Charan at the same rate of interest compounded annually for the same period. At the end of two years, he received Rs. 2400 as compound interest but paid Rs. 2000 only as simple interest. Find the rate of interest.

40%

30%

20%

10%

10.		Find compound interest on Rs. 8000 at 15% per annum for 2 years 4 months, compounded annually.

2109

3109

4109

6109