SOLUTION: If Justin has 4 times as many dimes as nickels and they have a combined value of 180 cents, how many of each coin does he have?

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Question 1028119: If Justin has 4 times as many dimes as nickels and they have a combined value of 180 cents, how many of each coin does he have?
Answer by CubeyThePenguin(3113) About Me  (Show Source):
You can put this solution on YOUR website!
d = number of dimes
n = number of nickels

d = 4n
10d + 5n = 180

Plug in the first equation into the second.

45n = 180
n = 4

Justin has 4 nickels and 16 dimes.