SOLUTION: A chemist has 20% and 60% solutions of acids available. How many liters of each solution should be mixed to obtain 20 liters of a 40% solution?

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Question 861667: A chemist has 20% and 60% solutions of acids available. How many liters of each solution should be mixed to obtain 20 liters of a 40% solution?
Found 2 solutions by Alan3354, josgarithmetic:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
40 is the average of 20 & 60 --> equal amounts

Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
See this lesson and you will know what to do for all of the problems which fit this form:

How much of two different concentrations to obtain specified concentration in-between.