SOLUTION: Teresa has $6.00 worth of change in nickels and dimes. If she has 4 times as many nickels as dimes, how many of each type of coin does she have?

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Question 997433: Teresa has
$6.00 worth of change in nickels and dimes. If she has
4 times as many nickels as dimes, how many of each type of coin does she have?
Answer by CubeyThePenguin(3113) About Me  (Show Source):
You can put this solution on YOUR website!
n = number of nickels
d = number of dimes

5n + 10d = 600
n = 4d

Substitute the second equation into the first.

5(4d) + 10d = 600
20d + 10d = 600
30d = 600
d = 20

There are 20 dimes and 80 nickels.