last year a worker saved 5 % of her annual salary . this year , she made 20 % more money than last year and she saved 6 % of her salary . the amount she saved this year was what percent of the amount she saved last year ?
"let x be the worker ' s salary last year . last year , she saved 0.05 x . this year , she saved 0.06 ( 1.2 x ) = 0.072 x 0.072 x / 0.05 x = 144 % the answer is c ."
multiply(const_100, divide(5, multiply(add(20, const_100), divide(6, const_100))))