Question 829272: a boy has $2.25 in nickels and dimes. If he has 12 more dimes than nickels, how many coins of each type does he have? Answer by TimothyLamb(4379) (Show Source):
You can put this solution on YOUR website! ---
5x + 10y = 225
y = x + 12
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put the system of linear equations into standard form:
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5x + 10y = 225
x - y = -12
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solution:
x = nickels = 7
y = dimes = 19
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