SOLUTION: Juan has 15 coins, all nickels and dimes. This collection of coins is worth 90 cents. How many nickels and dimes are there?

Question 925532: Juan has 15 coins, all nickels and dimes. This collection of coins is worth 90 cents. How many nickels and dimes are there?
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
x = nickels
y = dimes
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x + y = 15
5x + 10y = 90
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put the system of linear equations into standard form
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x + y = 15
5x + 10y = 90
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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 = nickels = 12
y = dimes = 3
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Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
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Solve quadratic equations, quadratic formula:
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Solve systems of linear equations up to 6-equations 6-variables:
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