SOLUTION: A pharmacist needs 6 oz of a 30% codeine solution, but he only has bottle of 20% and 50% codeine solutions. Find how many ounces from each bottle should be mixed for this prescript

Question 34661: A pharmacist needs 6 oz of a 30% codeine solution, but he only has bottle of 20% and 50% codeine solutions. Find how many ounces from each bottle should be mixed for this prescription.
Answer by Paul(988) (Show Source): You can put this solution on YOUR website!
"A pharmacist needs 6 oz of a 30% codeine solution" Of refering to the product:
Let the solution be x
Equation:
20x+50(6-x)=30(6)
20x+300-50x=180
-30x=-120
x=4
6-4=2
Hence, he needs 4 oz of 20% and 2 oz of 50%.
Paul.
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