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

How many cups of 20% hydrochloric acid must be mixed with how many cups of 55% hydrochloric acid to make 620 cups of a 32% hydrochloric acid solution?

The number of cups of 20% hydrochloric acid needed is cups.

The number of cups of 55% hydrochloric acid needed is cups.