Problem: john makes $ 60 a week from his job . he earns a raise andnow makes $ 80 a week . what is the % increase ?
Rationale: "increase = ( 20 / 60 ) * 100 = ( 1 / 3 ) * 100 = 33.33 % . b"
annotated_formula: multiply(divide(subtract(80, 60), 60), const_100)