A sum of money at simple interest amounts to Rs. 815 in 2 years and to Rs. 854 in 3 years. The sum is:
Choose one:
A) 500  B) 698  C) 780  D) 737  E) None
Sol.   S.I. for 1 year = Rs. (854 - 815) = Rs. 39.   S.I. for 2 years = Rs. (39 * 2) = Rs. 78.   âˆ´ Principal = Rs. (815 - 78) = Rs. 737.   Answer 737
<result>D</result>
A sum of money at simple interest amounts to Rs. 815 in 2 years and to Rs. 854 in 3 years. The sum is: