Andrew has a certain number of coins in his pocket. He has three times as many dimes as quarters and six times as many nickels as dimes. A nickel is worth $0.5, a dime is worth $0.10 and a quarter is worth $0.25. If he has a total of $10.15, then which of the following represents the number of dimes in Andrew’s pocket? Choose the correct choice from the following.
A) 3
B) 10
C) 18
D) 20
E) 21
E.   Let number of quarters be q. Therefore , dimes are 3q and nickels are 18q.   Total value = 18q(.5) + 3q(0.1) + .25q =9.55q   Given total value = 10.15   therefore, 9.55q=10.15 or q=1   Number of dimes = 3q = 3   3nswer : 3
<result>A</result>
Andrew has a certain number of coins in his pocket. He has three times as many dimes as quarters and six times as many nickels as dimes. A nickel is worth $0.5, a dime is worth $0.10 and a quarter is worth $0.25. If he has a total of $10.15, then which of the following represents the number of dimes in Andrew’s pocket?