SOLUTION: In a collection of coins, the number of quarters is twice the number of dimes and the number of nickels is five less than the number of dimes. How many type of each coin are in the

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Question 807925: In a collection of coins, the number of quarters is twice the number of dimes and the number of nickels is five less than the number of dimes. How many type of each coin are in the collection, if the total amount of money is $9.50?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
q=2d,
n=d-5,
25q+10d+5n=950
d = 15, n = 10, q = 30