A bag contains an equal number of one rupee, 50 paise and 25 paise coins respectively. If the total value is 105, how many coins of each type are there?  Choose the correct choice from the following answers
A) 20 coins
B) 30 coins
C) 40 coins
D) 60 coins
E) none of these

Rationale: "let number of each type of coin = x . then , 1 × x + . 50 × x + . 25 x = 105 ⇒ 1.75 x = 105 ⇒ x = 60 coins answer d"
Answer: D