SOLUTION: Lori needed to put some coins in a parking meter. Looking in her wallet, she found some nickels and dimes. The number of dimes she placed in the meter was 3 less than 4 times the n

Question 829808: Lori needed to put some coins in a parking meter. Looking in her wallet, she found some nickels and dimes. The number of dimes she placed in the meter was 3 less than 4 times the number of nickels. If she put $1.50 in the meter, how many of each coin did she use?
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
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x = nickels
y = dimes
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5x + 10y = 150
y = 4x - 3
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put the system of linear equations into standard form:
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5x + 10y = 150
4x - y = 3
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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 = 4
y = dimes = 13
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Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
---
Solve quadratic equations, quadratic formula:
https://sooeet.com/math/quadratic-formula-solver.php
---
Solve systems of linear equations up to 6-equations 6-variables:
https://sooeet.com/math/system-of-linear-equations-solver.php
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