# If the amount received at the end of 2 nd and r3 rd year at compound i

| If the amount received at the end of 2

^{nd}and r3^{rd}year at compound interest on a certain principal is Rs 9,600 and Rs 10,272 respectively, what is the rate of interest (in%)?A. 7

B. 8

C. 6

D. 5

### Right Answer is: A

#### SOLUTION

Compound interest in 2 two year=9600

Compound interest in 3 year=10272

Difference between the compound interest=10272-9600=672

Let the rate of interest=r

So 672=r%of 9600

672=

r=7%

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If the amount received at the end of 2 nd and r3 rd year at compound i