ICSE Guess > ICSE/ISC eBooks > Class X > Maths by Mr. M. P. Keshari

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Exercise – 1 B

Q. 1. Find the amount and the compound interest of Rs.50000 in 2 years at 5% per annum compounded annually.

Q. 2. Find the amount and the compound interest of Rs.50000 in 1(1/2) years at 6% per annum compounded half yearly.

Q. 3. On what sum of money will the difference between the S.I. and the C.I. for 2 years at 5% per annum compounded annually is Rs.15.

Q. 4. The compound interest calculated yearly, on a certain sum of money for the second year is Rs. 880 and for the third year is Rs.968. Calculate the rate of interest and the original money.

Q. 5. A sum of money invested at C.I. amounts in 3 years to Rs.800 and in 4 years to Rs. 840. Find the rate of interest.

Q. 6. Find the amount and C.I. of Rs.50000 in 1(1/2) years at 10% per annum compound half yearly

Q. 7. A sum of money amounts to Rs.57,600 in 2 years at 6(2/3%) p.a. compounded annually. Find the sum.

Q. 8. In what time will Rs.15625 amounts to Rs.16900 at 4% per annum compounded annually.

Q. 9. A sum of money is lent out at C.I. for two years at 20% p.a. C.I. being reckoned yearly. If the same sum of money was lent out at C.I. at the same rate percent per annum, C.I. being reckoned half yearly, it would have fetched Rs.482 more by way of interest. Calculate the sum of money lent out.

Q. 10. At what rate of interest will Rs.20000 amounts to Rs.26620 in 3 years if interest is compounded annually.

Q. 11. A sum of money is lent at 5% p.a. compounded interest. If the interest for the second year exceeds that for the first year by Rs.210, find the original principal.

Q. 12. A sum of money placed at C.I. doubles it self in 6 years. In how many years will it amount to 4 times itself.

Q. 13. Divide Rs.2602 between A and B so that A’s share at the end of 7 years may be equal to B’s share at the end of 9 years compound interest being at 4%.

Q. 14. A sum is invested at C.I. payable annually. The interest in two successive years was RS.300 and Rs.315. Find the rate of interest and the sum.

Q. 15. A man borrowed Rs.16000 at 5% per annum simple interest and lend it to another persion at 5% per annum compound interest. Find how much he earned in 3 years.