A sum of money at simple interest amounts to Rs. 825 in 3 years and to Rs. 850 in 4 years. The sum is?
Choose the most appropriate option
A) s. 738
B) s. 750
C) s. 650
D) s. 730
E) s. 735
S.I. for 1 year = (850 - 825) = Rs. 25   S.I. for 3 years = 25 * 3 = Rs. 75   Principal = (825 - 75) = Rs. 750.   ANSWER:s. 750
<result>B</result>
A sum of money at simple interest amounts to Rs. 825 in 3 years and to Rs. 850 in 4 years. The sum is?