SOLUTION: A Pharmacist is to prepare 30ml of eye drops with 4% active ingredient. They have only 1% and 10% solutions in stock. How much of each type should be used?

Question 822264: A Pharmacist is to prepare 30ml of eye drops with 4% active ingredient. They have only 1% and 10% solutions in stock. How much of each type should be used?
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
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x + 10y = 4(30)
x + y = 30
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put the system of linear equations into standard form
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x + 10y = 120
x + y = 30
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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= 20 ml of 1% solution
y= 10 ml of 10% solution
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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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