1. A sum of money invested at compound interest amounts to Rs. 800 in 3 years and to Rs. 840 in 3 ears and to Rs. 840 in 4 years. The rate of interest per annum is:
2. A sum of money invested at compound interest amounts to Rs. 4624 in 2 years and to Rs. 4913 in 3 years . The sum of money is:
3. A sum of money becomes Rs. 13,380 after 3 years and Rs. 20,070 after 6 years on compound interest. The sum is:
4. A sum of Rs. 12,000 deposited at compound interest becomes double after 5 years after 20 years, it will become:
5. A sum on on compound interest becomes three times in 4 years, then with the same interest rate, the sum will become 27 times in:
6. The least number of complete ears in which a sum of money put out at 20% compound interest will be more than doubled is:
7. A man borrows Rs. 2550 to be paid back with compound interest at the rate of 4% per annum lb the end of 2 years in two equal early instal ments. How much will each instal ments be?
8. What annual payment will discharge a debt of Rs. 1025 due in 2 years at the rate of 5% compound interest?
9. A man borrows Rs. 12,500 at 20% compound interest At the end of ever year he pays Rs. 2000 as part repayment. How much does he still owe after three such instal ments?
10. A sum of money is borrowed and paid back in two annual instal ments of Rs. 882 each allowing 5% compound interest. The sum borrowed was:
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