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Now that it's getting down to the wire on decisions, I thought I'd add a comment about the board. 99 percent of the people here are being constructive and 97 percent of the time they do it in a nice way. Not everywhere in the world operates this way. You are all to be congratulated. And I hope everyone ends up in a program that is similarly supportive.
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How many liters of pure alcohol must be added to a 100-liter solution that is 20% alcohol in order to produce a solution that is 25% alcohol? A. 7/2 B. 5 C. 20/3 D. 8 E. 39/4
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