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

How many drams of 40% ethanoic acid must be mixed with how many drams of 85% ethanoic acid to make 680 drams of a 70% ethanoic acid solution?

The number of drams of 40% ethanoic acid needed is drams.

The number of drams of 85% ethanoic acid needed is drams.