1. A sum of money at compound interest amounts to thrice itself in 4 years. In how many years will it be 9 times itself?
(a) 3 years (b) 9 years (c) 10 years (d) 8 years
2. Divide Rs.5000 in two parts in such a way that the interest on the first part at 10 % per annum for 2 years is equal to the interest on the second part at 5 % per annum for 4 years. Find the part at 10 % per annum?
(a) 1500 (b) 2500 (c) 3000 (d) 1750
3. A certain sum of money at simple interest amounts to Rs. 1,260 in 2 years and to Rs. 3,250 in 5 years at the rate of
(a) 25% (b) 2.5% (c) 0.25% (d) 1.25%
4. The difference between simple interest and compound interest on Rs. 1250 for 2 years at 8 % is
(a) 18 (b) 80 (c) 8 (d) 81
5. A sum of money invested for a certain number of years at 8% p.a. simple interest grows to Rs.180. The same sum of money invested for the same number of years at 4% p.a. simple interest grows to Rs.120 only. For how many years was the sum invested?
(a) 25 years (b) 40 years
(c) 33 years and 4 months (d) Cannot be determined
6. How much should money lender lend at simple rate of interest of 15% in order to have Rs. 3234 at the end of 1½ years?
(a) 2640 (b) 2600 (c) 3180 (d) 2950
7. The S.I. on Rs.1820 from March 9, 2003 to May 21, 2003 at 7 ½ % rate will be:
(a) Rs.22.50 (b) Rs. 27.30 (c) Rs. 28.80 (d) Rs.29
8. How long will it take a sum of money invested at 5% p.a. S.I to increase its value by 40%?
(a) 5 years (b) 6 years (c) 7 years (d) 8 years
9. The simple interest on a sum of money at 8% per annum for 6 years is half the sum. The sum is:
(a) Rs. 4800 (b) Rs.6000 (c) Rs.8000 (d) Data inadequate
10. What will be the ratio of simple interest earned by certain amount at the same rate of interest for 6 years and that for 9 years?
(a) 1:3 (b) 1:4 (c) 2:3 (d) None of these
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