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A photographer is mixing 2 liters of a 10% acetic acid solution with a 5% solution to get a 7% solution. How many liters of the 5% solution should he add?
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The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.
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A photographer is mixing 2 liters of a 10% acetic acid solution with a 5% solution to get a 7%
sol...
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