The total of 342 of 20 paise and 25 paise make a sum of Rs. 71. The no of 20 paise coins is Choose the correct choice from the following options:
A) 238 B) 290 C) 278 D) 200 E) 288

Rationale: "explanation : let the number of 20 paise coins be x . then the no of 25 paise coins = ( 342 - x ) . 0.20 * ( x ) + 0.25 ( 342 - x ) = 71 = > x = 290 . . answer : b ) 290"
Answer: B