Question

A sum of money at simple interest amount to be 815 in 3 years and to rs 854 in 4 years the sum is

Answer 1

sum is 698.

solution-

854-815=39

39 is interest for the 4th year

since its simple interest so SI will be same over the period for each year

now 815 is amount in 3 years

so Sum before three years will be 815-39-39-39=698