A shopkeeper loses 15%,if an article is sold for Rs. 170. What should be the selling price of the article to gain 20%?	Choose one
A) s . 247
B) s . 248
C) s . 240
D) s . 229
E) s . 212

Rationale: "given that sp = rs . 170 and loss = 15 % cp = [ 100 ( sp ) ] / ( 100 - l % ) = ( 100 * 170 ) / 85 = 20 * 6 = rs . 200 . to get 20 % profit , new sp = [ ( 100 + p % ) cp ] / 100 = ( 200 * 120 ) / 100 = rs . 240 answer : c"
Answer: C