A sum of money invested at compound interest amounts in 3 years to Rs.2,400 and in 4 years to Rs.2,520. The interest rate per annum is:

A sum of money invested at compound interest amounts in 3 years to Rs.

1.	A sum of money invested at compound interest amounts in 3 years to Rs.2,400 and in 4 years to Rs.2,520. The interest rate per annum is:
A.	12%
B.	6%
C.	5%
D.	10%
Answer» D. 10%

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A sum of money invested at compound interest amounts in 3 years to Rs.2,400 and in 4 years to Rs.2,520. The interest rate per annum is:

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