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Quantitative Aptitude :: Compound Interest Problems And Answers

Compound Interest Formulaes

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11. The difference between the compound interest and simple interest accrued on an amount at the end of three years at the rate of 12% is Rs.381.888. What is the amount?
A. Rs. 9500 B. Rs. 8400
C. Rs.8000 D. Rs.8200
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12. A sum is invested for 3 years compounded at 5%, 10% and 20 % respectively. In three years, if the sum amounts to Rs. 1386, then find the sum.
A.  Rs. 1500 B. Rs. 1000
C. Rs. 1200 D. Rs. 1400
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13. Divide Rs. 3364 between A and B, so that A's Share at the end of 5 years may equal to B's share at the end of 7 years, compound interest being at 5 percent.
A. Rs. 1764 and Rs.1600 B. Rs. 1756 and Rs.1608
C. Rs. 1722 and Rs.1642 D. None of these
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14. If a sum on compound interest becomes three times in 4 years, then with the same interest rate, the sum will become 81 times in:
A. 12 years B. 18 years
C. 16 years D. 14 years
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15. Arun borrowed a certain sum from Manish at a certain rate of simple interest for 2 years. He lent this sum to Sunil 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.
A. 40% B. 30%
C. 20% D. 10%
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16. A sum is invested at compounded interest payable annually. The interest in the first two successive years was Rs. 400 and Rs. 420. The sum is
A. Rs. 8000 B. Rs. 8200
C. Rs.7500 D. Rs. 8500
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17. Arun borrowed a certain sum from Manish at a certain rate of simple interest for 2 years. He lent this sum to Sunil 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.
A. 20% B. 10%
C. 40% D. 50%
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18. If a sum on compound interest becomes three times in 4 years, then with the same interest rate, the sum will become 81 times in:
A. 12 years B. 18 years
C. 16 years D. 14 years
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19. The difference between the simple interest on a certain sum at the rate off 10% per annum for 2 years and compound interest which is compounded every 6 months is Rs. 124.05. What is the principal sum?
A. Rs. 6000 B. Rs. 8000
C. Rs. 12000 D. Rs. 10000
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20. A sum of money placed at compound interest doubles itself in 4 years. In how many years will it amount to 8 times?
A. 10 years B. 8 years
C. 6 years D. 12 years
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Related Topics

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Problems on Averages
Problems on Ages
Boats and Stream
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Problems on Calender
Problems on Clack
Compound Interest
LCM-and-HCF
Mensuration
Number System
Partnership
Percentage
Permutations-Combinations
Profit-and-Loss
Probability
Time & Distance
Time & Work
Problems-on-Trains