if 5 % more is gained by selling an article for rs . 350 than by selling it for rs . 345 , the cost of the article is
"explanation : let c . p . be rs . x . then , 5 % of x = 350 - 345 = 5 x / 20 = 5 = > x = 100 answer : c"
divide(subtract(350, 345), divide(5, const_100))