Kyle has 13 coins in his pocket that are either quarters or nickels. He has $2.05 in his pocket in coins.

Let q represent the number of quarters and n represent the number of nickels. The following system of equations represents this situation:

q+n=13

0.25q+0.05n=2.05

How many nickels and quarters does Kyle have?

3 answers

1 q + 1 n = 13
1 q + .2n = 8.2
---------------subtract
.8 n = 4.8
so 6 nickels

67

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