Posted by cleondra on Friday, August 3, 2012 at 12:54pm.
you need to prepare 180g of a 10% cream using 30% stock cream and a cream base.how much needed of each

pharmacy technician  cleondra, Friday, August 3, 2012 at 12:58pm
when using 1% cream and a 6% cream to produce a 4% cream how many parts of each initial ingredient will be needed?

pharmacy technician  DrBob222, Friday, August 3, 2012 at 1:38pm
180g of 10%A contains 180*0.1 = 18 g of A. How much of the 30%A must you take to obtain 18g? Won't that be 0.3*?gA = 18g A and ? = 60g.
So you take 60g of the 30% stuff, add 120 g cream base to give 180 g total. What percent is that? Its (18g/180)*100 = 10%
Answer This Question
Related Questions
 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 ...
 pharmaceutical math  You need to prepare 180g of a 10% cream using 30% stock ...
 math alligations  you need to prepare 180g of an 5%cream using 30% stock cream ...
 math  You need to prepare 120 g of a 7% cream using a 21% stock cream and a 2% ...
 pha  You need to prepare 120 g of a 7% cream using a 21% stock cream and a 2% ...
 pharmacy math  Prepare 180 g of Lotrimin 0.05% cream. In stock, you have 200 g ...
 pharmacy tech.  When using a 2% cream and a 5% cream to produce a 4% cream how ...
 pharmacy math  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...
More Related Questions