A sum at simple interest becomes Rs. 815 in 3 years and Rs. 854 in 4 years. What is the principal?
A sum at simple interest becomes Rs. 815 in 3 years and Rs. 854 in 4 years. What is the principal?
A: Rs. 698
B: Rs. 700
C: Rs. 715
D: Rs. 720
Amount grows from Rs. 815 (3 years) to Rs. 854 (4 years).