If the selling price of 100 articles is equal to the cost price of 63 articles, then the loss or gain percent is: Answers:  A) 39 %  B) 36 %  C) 35 %  D) 40 %  E) 37 %

Rationale: "let c . p . of each article be re . 1 . then , c . p . of 100 articles = rs . 100 ; s . p . of 100 articles = rs . 63 . loss % = 37 / 100 * 100 = 37 % answer : e"
Answer: E