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? Choose the correct choice from the following:
A) 20 coins  B) 30 coins  C) 40 coins  D) 25 coins  E) None of these
Let number of each type of coin = x. Then,   1 × x + .50 × x + .25x = 70   ⇒ 1.75x = 70 ⇒ x = 40 coins   Answer 40 coins
<result>C</result>
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?