If 5% more is gained by selling an article for Rs. 350 than by selling it for Rs. 340, the cost of the article is:	Select:  A) rs . 50  B) rs . 160  C) rs . 200  D) rs . 225  E) rs . 325

Rationale: "let c . p . be rs . x . then , 5 % of x = 350 - 340 = 10 x / 20 = 10 = > x = 200 answer : c"
Answer: C