SOLUTION: Mark has a total of 15 nickels and quarters. Altogether he has $2.55. How many of each coin does he have.

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Question 1126937: Mark has a total of 15 nickels and quarters. Altogether he has $2.55. How many of each coin does he have.
Answer by josgarithmetic(39629) About Me  (Show Source):
You can put this solution on YOUR website!
q quarters
15-q nickels

5%2815-q%29%2B25q=255
75-5q%2B25q=255
20q=255-75
20q=180
q=9

9 quarters
6 nickels