if the cost price of 72 articles is equal to the selling price of 60 articles , then what is the percent profit ?
"let x be the cost price of one article . let y be the selling price of one article . 60 y = 72 x y = 1.2 x the answer is c ."
multiply(const_100, divide(subtract(const_100, divide(multiply(const_100, 60), 72)), divide(multiply(const_100, 60), 72)))