if 5 % more is gained by selling an article for rs . 360 than by selling it for rs . 340 , the cost of the article is
"explanation : let c . p . be rs . x . then , 5 % of x = 360 - 340 = 20 x / 20 = 20 = > x = 400 answer : b"
divide(subtract(360, 340), divide(5, const_100))