Question
Asked Dec 22, 2019
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How many liters of a 40% acid mixture and how many liters of a 10% acid mixture should be mixed to obtain 20 L of a 22% acid mixture?

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Expert Answer

Step 1

Let x liters of 40% acid mixture be needed and y liters of 10% acid mixture be needed. This gives

 

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x+y = 20

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Step 2

Since final mixture is 22% acid so...

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10 -x+ 100 40 22 20 100 . 100 4x+y = 44

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Tagged in

Math

Algebra

Equations and In-equations