if the cost price of 20 articles is equal to the selling price of 16 articles , what is the percentage of profit or loss that the merchant makes ?
"explanation : let cost price of 1 article be re . 1 . therefore , cost price of 20 articles = rs . 20 . selling price of 16 articles = rs . 20 therefore , selling price of 20 articles is : - = > 20 / 16 × 20 = > 25 . therefore , profit = selling price - cost price . = > 25 − 20 = 5 . hence , the percentage of profit = profit x 100 / c . p . = > 5 / 20 × 100 . = > 25 % profit . answer : b"
multiply(const_100, divide(subtract(const_100, divide(multiply(const_100, 16), 20)), divide(multiply(const_100, 16), 20)))