If the compound interest on a certain sum at 16 (2/3)% to 3 years is Rs.1270,find the simple interest on the same sum at the same rate and for the same period.
Options:
A . 1080
B . 1085
C . 1090
D . 1095
Answer: Option A
Let the sum be Rs. x. C.I. = [ x * (1 + (( 50/(3*100))^3 - x ] = ((343x / 216) - x) = 127x / 216 127x /216 = 1270 x = (1270 * 216) / 127 = 2160 Thus, the sum is Rs. 2160 S.I.= Rs( 2160 * (50/3) * 3 * (1 /100 ) ) = Rs. 1080
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