SOLUTION: alberto wants to make 10 liters of a 13% solution by mixing together a 10% acid solution and a 20% acid solution. how much of each solution must he use ?

Question 821588: alberto wants to make 10 liters of a 13% solution by mixing together a 10% acid solution and a 20% acid solution. how much of each solution must he use ?
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
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10x + 20y = 13*10
x + y = 10
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put the system of linear equations into standard form
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10x + 20y = 130
x + y = 10
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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= 10% solution 7 liters
y= 20% solution 3 liters
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Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
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Solve quadratic equations, quadratic formula:
https://sooeet.com/math/quadratic-formula-solver.php
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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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