A sum of money at simple interest amounts to Rs. 855 in 3 years and to Rs. 854 in 4 years. The sum is:
Pick one:
A) s. 650
B) s. 690
C) s. 738
D) s. 700
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. (855 - 117) = Rs. 738.   Answer: Option s. 738
<result>C</result>
A sum of money at simple interest amounts to Rs. 855 in 3 years and to Rs. 854 in 4 years. The sum is: