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Answer the following chemistry problem. Report the volume to the nearest gallon of ethanoic acid.

How many gallons of 15% ethanoic acid must be mixed with how many gallons of 30% ethanoic acid to make 520 gallons of a 23% ethanoic acid solution?

The number of gallons of 15% ethanoic acid needed is gallons.

The number of gallons of 30% ethanoic acid needed is gallons.