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
A) 64.19	B) 64.12	C) 62.1	D) 64.1	E) 64.11
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: 64.1
<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?