if the cost price of 50 articles is equal to the selling price of 28 articles , then the gain or loss percent is ?
"given that , cost price of 50 article is equal to selling price of 28 articles . let cost price of one article = rs . 1 selling price of 28 articles = rs . 50 but cost price of 28 articles = rs . 28 therefore , the trader made profit . \ percentage of profit = 22 / 28 * 100 = 78.57 % answer : c"
multiply(const_100, divide(subtract(const_100, divide(multiply(const_100, 28), 50)), divide(multiply(const_100, 28), 50)))