Compound Interest
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31 Asha lended a sum of ₹8000 for 20% per annum at compound interest then the sum of the amount will be ₹13824 is obtained. After how many years he will get that amount?
32 Barsha wins ₹ 120000 on Kaun Banega Crorepati. He has to pay 25% as gift tax to the government. He places remaining money in fixed deposit 10% compounded annually. However, he has to pay 20% tax on the interest. How much money does Barsha has after 4 years?
33 A tape recorder is sold for ₹ 3500 cash, or ₹ 1000 cash down payment and the balance in three equal easy installments. If 12($$\frac{1}{2}$$)% is the rate of interest compounded annually, find the amount of installment:
34 Suraj and Sanjay have equal amounts. Suraj invested all his amount at 10% p.a compounded annually for 2 years and Sanjay invested 1/4th amount at 10% p.a compound interest (annually) and rest at r% per annum at simple interest for the same 2 years period. The amount received by both at the end of 2 year is same. What is the value of r?
35 Two people A and B invested ₹ 10000 each at 8% simple interest for 6 years. After that A invested the amount for 2 years at the rate of 10% compounded annually while B invested amount for 2 years at 12% per annum simple interest. Find the difference between the interests earned by two person:
36 A certain amount of money is lent out at compound interest at the rate of 20% per annum for two years, compounded annually. It would give ₹ 482 more if the amount is compounded half yearly. Find the principle:
37 Prasanta borrows ₹ 6250 from geetha at 10% CI. At the end of every year she pays ₹ 1000 as part repayment. How much does she still over after 3 such installments?
38 A person takes a loan of ₹ 200 at 5% p.a compound interest. He returns ₹ 100 at the end of one year. How much amount he would require to pay at the end of 2nd year in order to clear his dues:
