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

How many cups of 60% hydrochloric acid must be mixed with how many cups of 45% hydrochloric acid to make 620 cups of a 53% hydrochloric acid solution?


The number of cups of 60% hydrochloric acid needed is cups.
The number of cups of 45% hydrochloric acid needed is cups.