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April 20, 2014

Homework Help: math help

Posted by amy on Thursday, March 29, 2012 at 10:05am.

A lab assistant wants to make FIVE LITERS of 31.2% acid solution. If solutions of 40% and 18% are in stock, how many liters of each must be mixed to prepare the solution.

i dont even know what equation to use or anything, please help me, thank you.

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