A sum of money at simple interest amounts to Rs. 825 in 3 years and to Rs. 840 in 4 years. The sum is?
Pick.
A) s. 780  B) s. 638  C) s. 650  D) s. 730  E) s. 735
S.I. for 1 year = (840 - 825) = Rs. 2915   S.I. for 3 years = 15 * 3 = Rs. 45   Principal = (825 - 45) = Rs. 780.   s. 780NSWER:s. 780
<result>A</result>
A sum of money at simple interest amounts to Rs. 825 in 3 years and to Rs. 840 in 4 years. The sum is?