question about pharmacy math (mixture)

by Nancy
(Torrance, CA)

What ratio of 25% dextrose and 10% dextrose should be mixed to make a 20% solution?

Reply (by Keith):That would be 2 parts 25% -to- 1 part 5%.

The Alligations page has an example almost exactly like this, but shows you step by step how to do it.

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