SOLUTION: A doctor prescribes an ointment that is 2% hydrocortisone. A pharmacist as 1% and 5% concentrations in stock. How much of each should the pharmacist use to make a 1-ounce tube?

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Question 104222This question is from textbook College Algebra
: A doctor prescribes an ointment that is 2% hydrocortisone. A pharmacist as 1% and 5% concentrations in stock. How much of each should the pharmacist use to make a 1-ounce tube? This question is from textbook College Algebra

Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
let x=(amount of 5%); so 1-x=(amount of 1%)

x(5%)+(1-x)(1%)=1(2%)