a sum of money at simple interest amounts to rs . 825 in 3 years and to rs . 846 in 4 years . the sum is ?
"s . i . for 1 year = ( 846 - 825 ) = rs . 29 s . i . for 3 years = 21 * 3 = rs . 63 principal = ( 825 - 63 ) = rs . 762 . answer : d"
subtract(825, divide(multiply(subtract(846, 825), 3), 4))