Problem: a man invests some money partly in 9 % stock at 96 and partly in 12 % stock at 120 . to obtain equal dividends from both , he must invest the money in the ratio ?
Rationale: "for an income of re . 1 in 9 % stock at 96 , investment = rs . 96 / 9 = rs . 32 / 3 for an income re . 1 in 12 % stock at 120 , investment = rs . 120 / 12 = rs . 10 . ratio of investments = ( 32 / 3 ) : 10 = 32 : 30 = 16 : 15 answer : c"
annotated_formula: divide(multiply(96, const_2), multiply(120, const_3))