SOLUTION: If Erica has 3 more quarters than dimes and they have a combined value of 320 cents, how many of each coin does she have?

Question 924455: If Erica has 3 more quarters than dimes and they have a combined value of 320 cents, how many of each coin does she have?
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
x = dimes
y = quarters
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y = x + 3
10x + 25y = 320
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put the system of linear equations into standard form
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x - y = -3
10x + 25y = 320
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copy and paste the above standard form linear equations in to this solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
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solution:
x = dimes = 7
y = quarters = 10
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