a pair of articles was bought for $ 50 at a discount of 40 % . what must be the marked price of each of the article ?
s . p . of each of the article = 50 / 2 = $ 25 let m . p = $ x 60 % of x = 25 x = 25 * . 6 = $ 15 answer is b
divide(multiply(subtract(const_100, 40), divide(50, const_2)), const_100)