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

when using a 2 % cream and a 5% cream to produce a 4% cream how many part of each initiial ingredient are needed?

- pharmacy math -
**DrBob222**, Sunday, August 12, 2012 at 8:23pm
I 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%.

## Answer This Question

## Related Questions

- pharmacy tech. - When using a 2% cream and a 5% cream to produce a 4% cream how ...
- pharmacy tech. - When using a 1% cream and a 6% cream to produce a 4% cream, how...
- math - When using a 1% cream and a 6% cream to produce a 4% cream, how many ...
- chemistry - When using a 1% cream and a 6% cream to produce a 4% cream, how many...
- pharmacy calculations - you need to prepare 180g of a 5% cream using 30% stock ...
- pharmacy calculations - you need to prepare 180g of a 10% cream using 30% stock ...
- pharmacy technician - you need to prepare 180g of a 10% cream using 30% stock ...
- pharmacy math - Prepare 180 g of Lotrimin 0.05% cream. In stock, you have 200 g ...
- math - You need to prepare 120 g of a 7% cream using a 21% stock cream and a 2% ...
- pharmaceutical math - You need to prepare 180g of a 10% cream using 30% stock ...

More Related Questions