A sum of money at simple interest amounts to Rs. 825 in 3 years and to Rs. 854 in 4 years. The sum is: Pick one
A) s. 650 B) s. 690 C) s. 698 D) s. 708 E) s. 718
S.I. for 1 year = Rs. (854 - 815) = Rs. 39.   S.I. for 3 years = Rs.(39 x 3) = Rs. 117.   Principal = Rs. (825 - 117) = Rs. 708.   Answer: Option s. 708
<result>D</result>
A sum of money at simple interest amounts to Rs. 825 in 3 years and to Rs. 854 in 4 years. The sum is: