Problem: a reduction of 50 % in the price of bananas would enable a man to obtain 64 more for rs . 40 , what is reduced price per dozen ?
Rationale: "explanation : 40 * ( 50 / 100 ) = 20 - - - 64 ? - - - 12 = > rs . 3.75 answer : d"
annotated_formula: multiply(const_12, divide(multiply(50, divide(50, const_100)), 64))