SOLUTION: A pharmacist mixes a cream that is 0.5% hydrocortisone with a second cream that 0.74% hydrocortisone to obtain 5 grams of a cream that is 0.68% hydrocortisone. How many grams of ea

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: A pharmacist mixes a cream that is 0.5% hydrocortisone with a second cream that 0.74% hydrocortisone to obtain 5 grams of a cream that is 0.68% hydrocortisone. How many grams of ea      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 886472: A pharmacist mixes a cream that is 0.5% hydrocortisone with a second cream that 0.74% hydrocortisone to obtain 5 grams of a cream that is 0.68% hydrocortisone. How many grams of each cream must be used? Qive the equations you used to solve the equation.
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
This lesson tells and shows everything you need to know. Equations AND solutions.

----- strange. The link is not working.

Then here is a start to the solving of that problem you wanted help on:

AmountofHydrocortizone%2FTotalMixture=fractionAsHydrocortizone and the sum of the quantities mixed will be equal to the 5 grams amount desired.

Let u = grams of 0.5% hydrocortizone cream
Let v = grams of 0.74% hydrocortizone cream

%280.5u%2B0.74v%29%2F5=0.68 and u%2Bv=5
Solve the system for u and v.