If the C.I. on a sum for 2 years at 12 1/2 % per annum is Rs. 510, the S.I. on the same sum at the same rate for the same period of time is?
Choose the correct option:
A) 488
B) 485
C) 470
D) 480
E) 482
Let the sum be Rs. P. Then,   [P(1 + 25/(2 * 100))2 - P] = 510   P[(9/8)2 - 1] = 510.   Sum = Rs. 1920   So, S.I. = (1920 * 25 * 2) / (2 * 100) = Rs. 480.Answer: 480
<result>D</result>
If the C.I. on a sum for 2 years at 12 1/2 % per annum is Rs. 510, the S.I. on the same sum at the same rate for the same period of time is?