There is 60% increase in an amount in 6 years at simple interest. What will be t

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There is 60% increase in an amount in 6 years at simple interest. What will be the compound interest of Rs. 12,000 after 3 years at the same rate?

Answer: Option C

Let P = Rs. 100. Then, S.I. Rs. 60 and T = 6 years.

R =

100 x 60

= 10% p.a.
100 x 6

Now, P = Rs. 12000. T = 3 years and R = 10% p.a.

C.I.
= Rs.

12000 x

1 +
10

3
- 1

100
= Rs.

12000 x
331

1000
= 3972.

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