5. A sum of money at simple interest amounts to Rs. 815 in 3 years and to Rs. 854 in 4 years. The sum is:
A.Rs. 7200
B.Rs. 6400
C.Rs. 7500
D.Rs. 6500
5. A sum of money at simple interest amounts to Rs. 815 in 3 years and to Rs. 854 in 4 years. The sum is:
A.Rs. 7200
B.Rs. 6400
C.Rs. 7500
D.Rs. 6500