SOLUTION: A farmer mixes a 20% fertilizer solution with a 40% fertilizer solution to make 8 quarts of a 33.75% fertilizer solution. How many quarts of each does he use?

Question 924729: A farmer mixes a 20% fertilizer solution with a 40% fertilizer solution to make 8 quarts of a 33.75% fertilizer solution. How many quarts of each does he use?
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
x = volume of 20%
y = volume of 40%
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20x + 40y = 33.75*8
x + y = 8
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put the system of linear equations into standard form
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20x + 40y = 270
x + y = 8
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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 = volume of 20% = 2.5 quarts
y = volume of 40% = 5.5 quarts
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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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