Problem: two numbers are in the ratio 3 : 5 . if 9 be subtracted from each , they are in the ratio of 5 : 2 . the first number is :
Rationale: "( 3 x - 9 ) : ( 5 x - 9 ) = 5 : 2 x = 1 = > 3 x = 3 answer : a"
annotated_formula: add(multiply(3, divide(9, multiply(3, 5))), multiply(5, divide(9, multiply(3, 5))))