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January 30, 2015

January 30, 2015

Posted by **cleondra** on Sunday, August 12, 2012 at 6:33pm.

- pharmacy math -
**DrBob222**, Sunday, August 12, 2012 at 8:23pmI saw a post by Mathmate that works these easier than an algebra solution.

............2%.......4%.........5%

difference........2.......1

So you take 1 part of 2% and 2 parts of 5% to make 3 parts of 4%.

As an example, if you wish to prepare 300 grams, take 100 g of the 2% and add to 200 g of the 5% to prepare 300 g of the 4%.

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