Question

A doctor prescribes an ointment that is 4% hydrocortisone. A pharmacist has 1% and 5% concentrations in stock. How many ounces of each should the pharmacist use to make a 6-ounce tube?

Answer 1

\[.05x+.01(6-x)=.04\times 6\] solve for \(x\)

Answer 2

probably easier to multiply both sides by 100 to get rid of annoying decimal and solve
\[5x+(6-x)=24\]

Answer 3

Thank you!

Answer 4

yw
btw i hope it is clear that \(x\) is the number of ounces of 5% cream

Answer 5

yes I understand thank you