Q&A #17531

Teachers' Lounge Discussion: math fluency

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From: Cody

To: Teacher2Teacher Public Discussion
Date: 2008100910:44:41
Subject: Can i get a formula

Jerry is experimenting with chemicals in the laboratory. He mixes a solution that is 10% acid with a solution that is 30% acid. How much of the 10% acid solution will be needed to make 40 liters of a solution that is 25% acid? can i get a formula please i forgot how to do this

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