A bag contains an equal number of one rupee, 50 paise and 25 paise coins respectively. If the total value is 35, how many coins of each type are there? Answers:
A) 20 coins B) 30 coins C) 28 coins D) 25 coins E) none of these

Rationale: "let number of each type of coin = x . then , 1 × x + . 50 × x + . 25 x = 35 ⇒ 1.75 x = 35 ⇒ x = 20 coins answer a"
Answer: A