The difference between the compound interest and simple interest on a certain sum for 2 years at 10 percent per annum when the interest is compounded annually is Rs. 20. If the interest were compounded half-yearly instead of annully, the difference in two interests best approximated would be:

The difference between the compound interest and simple interest on a

1.	The difference between the compound interest and simple interest on a certain sum for 2 years at 10 percent per annum when the interest is compounded annually is Rs. 20. If the interest were compounded half-yearly instead of annully, the difference in two interests best approximated would be:
A.	Rs. 29
B.	Rs. 32
C.	Rs. 30
D.	Rs. 31
Answer» E.