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

How many drams of 5% ethanoic acid must be mixed with how many drams of 20% ethanoic acid to make 640 drams of a 8% ethanoic acid solution?

The number of drams of 5% ethanoic acid needed is drams.

The number of drams of 20% ethanoic acid needed is drams.