What will be the difference between simple and compound interest at 10% per annum on a sum of Rs. 1000 after 4 years?	Choose the correct choice from the following options:
A) Rs.64.18
B) Rs.64.67
C) Rs.64.08
D) Rs.64.10
E) Rs.64.22
S.I. = (1000 * 10 * 4)/100 = Rs. 400   C.I. = [1000 * (1 + 10/100)4 - 1000]   = Rs. 464.10 Difference   = (464.10 - 400)   = Rs. 64.10   Answer: Rs.64.10
<result>D</result>
What will be the difference between simple and compound interest at 10% per annum on a sum of Rs. 1000 after 4 years?