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

How many gallons of 50% hydrochloric acid must be mixed with how many gallons of 35% hydrochloric acid to make 590 gallons of a 43% hydrochloric acid solution?

The number of gallons of 50% hydrochloric acid needed is gallons.

The number of gallons of 35% hydrochloric acid needed is gallons.