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Question 925083: A bank teller has 54 $5 and $20 bills in her cash drawer. The value of the bills is $780. How many $5 bills are there?
Answer by TimothyLamb(4379)   (Show Source):
You can put this solution on YOUR website! x = number of $5 bills
y = number of $20 bills
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x + y = 54
5x + 20y = 780
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put the system of linear equations into standard form
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x + y = 54
5x + 20y = 780
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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 = number of $5 bills = 20
y = number of $20 bills = 34
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