If the cost price of 50 articles is equal to the selling price of 32 articles, then the gain or loss percent is?
Choose the correct choice from the following choices:  A) 22  B) 56.25  C) 78  D) 33  E) 25

Rationale: "given that , cost price of 50 article is equal to selling price of 32 articles . let cost price of one article = rs . 1 selling price of 32 articles = rs . 50 but cost price of 32 articles = rs . 32 therefore , the trader made profit . \ percentage of profit = 18 / 32 * 100 = 56.25 % answer : b"
Answer: B