A shopkeeper loses 15%,if an article is sold for Rs. 187. What should be the selling price of the article to gain 20%? Choose one.
A) s . 247  B) s . 248  C) s . 264  D) s . 329  E) s . 412

Rationale: "given that sp = rs . 187 and loss = 15 % cp = [ 100 ( sp ) ] / ( 100 - l % ) = ( 100 * 187 ) / 85 = 20 * 6 = rs . 220 . to get 20 % profit , new sp = [ ( 100 + p % ) cp ] / 100 = ( 220 * 120 ) / 100 = rs . 264 answer : c"
Answer: C