A sum of money at simple interest amounts to Rs. 820 in 3 years and to Rs. 854 in 4 years. The sum is: Pick
A) 500
B) 718
C) 780
D) 910
E) None
Sol.   S.I. for 1 year = Rs. (854 - 820) = Rs. 34.   S.I. for 3 years = Rs. (34 * 3) = Rs. 102.   âˆ´ Principal = Rs. (820 - 102) = Rs. 718   Answer 718
<result>B</result>
A sum of money at simple interest amounts to Rs. 820 in 3 years and to Rs. 854 in 4 years. The sum is: