SOLUTION: You need a 20% alcohol solution. On hand, you have a 400 mL of a 15% alcohol mixture. You also have 60% alcohol mixture. How much of the 60% mixture will you need to add to obtain

SOLUTION: You need a 20% alcohol solution. On hand, you have a 400 mL of a 15% alcohol mixture. You also have 60% alcohol mixture. How much of the 60% mixture will you need to add to obtain

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Question 988766: You need a 20% alcohol solution. On hand, you have a 400 mL of a 15% alcohol mixture. You also have 60% alcohol mixture. How much of the 60% mixture will you need to add to obtain the desired solution?
Answer by josgarithmetic(39630) (Show Source): You can put this solution on YOUR website!
This is an example of a very common general type of mixing problem, which is why I refer you to a lesson on this type:

LESSON: two part mixture with one part quantity unknown, http://www.algebra.com/my/Two-Part-Mixture-with-one-material-quantity-unknown.lesson?content_action=show_dev
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