SOLUTION: emma has 50 coins in her pocket and their value is $6.30. If emma only has nickels and quarters, how many of each does she have?
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Question 929256: emma has 50 coins in her pocket and their value is $6.30. If emma only has nickels and quarters, how many of each does she have?
Found 2 solutions by Rongtian, TimothyLamb:
Answer by Rongtian(7) (Show Source): You can put this solution on YOUR website!
x=quarter amount
y=nickel amount
(-5)(x+y)=10(-5)
25x+5y=225
20x=175
no solution
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
x = nickels
y = quarters
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x + y = 50
5x + 25y = 630
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put the system of linear equations into standard form
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x + y = 50
5x + 25y = 630
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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 = 31
y = quarters = 19
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Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
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Solve systems of linear equations up to 6-equations 6-variables:
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