There is 60% increase in an amount in 6yrs at SI. What will be the CI of Rs. 12,000 after 3 years at the same rate?  Choose the correct choice from the following.
A) 2354
B) 2450
C) 2540
D) 2650
E) 3972
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.   3972
<result>E</result>
There is 60% increase in an amount in 6yrs at SI. What will be the CI of Rs. 12,000 after 3 years at the same rate?