A bag contains an equal number of one rupee, 50 paise and 25 paise coins respectively. If the total value is 70, how many coins of each type are there?
Answers.
A) 20 coins B) 30 coins C) 40 coins D) 25 coins E) none of these

Rationale: "let number of each type of coin = x . then , 1 × x + . 50 × x + . 25 x = 70 ⇒ 1.75 x = 70 ⇒ x = 40 coins answer c"
Answer: C