SOLUTION: 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?
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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!
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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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copy and paste the above linear system in standard form into this matrix-method solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
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solution:
x = nickels = 7
y = dimes = 19
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