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There is 50% increase in an amount in 5 years at simple interest. What will be the compound interest of Rs. 12,000 after 3 years at the same rate ?

Correct Answer: Rs. 3972

Explanation:

Let p = Rs. 100.


Then, S.I is Rs. 50 and time = 5 years. 


  R   =   100 × 50 100 × 5 = 10% p.a.


 


Now, p = Rs. 12,000 , T = 3 years and R = 10% p.a.



C.I. = Rs. 12000 × 1 + 10 100 3 - 1 = Rs. 3972


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