SOLUTION: A chemist needs to make 100 mL of a 30% alcohol solution by mixing 25% and 55% solutions. How much of the 55% solution should the chemist use?

Question 823809: A chemist needs to make 100 mL of a 30% alcohol solution by mixing 25% and 55% solutions. How much of the 55% solution should the chemist use?

Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
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25x + 55y = 30*100
x + y = 100
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put the system of linear equations into standard form
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25x + 55y = 3000
x + y = 100
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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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answer:
x= 83.333333 ml of 25%
y= 16.666666 ml of 55%
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Solve and graph linear equations:
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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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