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
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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) (Show Source): You can put this solution on YOUR website!
This lesson tells and shows everything you need to know. Equations AND solutions.
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Then here is a start to the solving of that problem you wanted help on:
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
and
Solve the system for u and v.
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