Problem: by how much is 50 % of 250 greater than 25 % of 400 .
Rationale: "( 50 / 100 ) * 250 â € “ ( 25 / 100 ) * 400 125 - 100 = 25 answer : b"
annotated_formula: subtract(multiply(250, divide(50, const_100)), multiply(divide(25, const_100), 400))