S Chand ICSE Mathematics Class 9 Solution Second Chapter Compound Interest Exercise 2C
(1) What amount of money should Mohan invest in a bank in order to get Rs. 1323 in 2 years at 5% compounded annually?
(2) Find the sum which amount to Rs. 1352 in 2 years at 4% compound interest.
(3) What principal will amount to Rs. 9768 in two years, if the rates of interest for the successive years are 10% p.a. and 11% p.a. respectively.
(4) On what sum of money does the difference between the simple interest and compound interest in 2 years at 5% per annum is Rs. 15?
Solution:
(5) The difference between simple and compound interest on the same sum of money at 6 and 2/3% for 3 years is Rs. 184. Determine the sum.
(6) On what sum of money will the difference between the simple interest and the compound interest for 2 years at 5% per annum be equal to Rs. 50?
Solution:
(7) Find the rate per cent per annum, if compounded yearly
(i) Principal = Rs. 196, Amount = Rs. 225, time = 2 years.
(ii) Principal = Rs. 3136, Compound Interest = Rs. 345, Time = 2 years.
Solution:
(8) Hari purchased Relief Bonds for Rs. 1000, a sum which will fetch him Rs. 2000 after 5 years. Find the rate of interest is compounded half yearly.
(9) Rs. 8000 became Rs. 9261 in a certain interval od time at the rate of 5% per annum, C.I. Find the time.
(10) In how many years will a sum of Rs. 3000 at 20% per annum compounded semi annually become Rs. 3993?
Solution:
(11) A sum of money put out at compound interest amounts in 2 years to Rs. 578.40 and in 3 years to Rs. 614.55. Find the rate of interest.
(12) A sum compounded annually becomes 25/16 times of itself in 2 years. Determine the rate of interest per annum.
Solution:
____ x ____
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