<PRE><B>Question 352633</B>
These are similar problems, 2 things at 2 different values.  Do it like this:
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You have a 1.2% antibiotic cream on the shelf and you have a 3.5 % antibiotic cream on the shelf. How much of each cream should you mix together if you want to obtain 8 ounces of a 1.75% cream?
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m = 1.2% amount
n = 3.5% amount
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m + n = 8 (total mixture)
0.012m + 0.035n = 0.0175*8 (total antibiotic)
2 eqns, 2 variables. Can you finish it?
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