SOLUTION: A recipe for salad dressing uses 2 oz of olive oil for each 1 oz of red wine vinegar. If 42 oz of salad dressing are needed, how many ounces of each ingredient should be used?

Algebra ->  Equations -> SOLUTION: A recipe for salad dressing uses 2 oz of olive oil for each 1 oz of red wine vinegar. If 42 oz of salad dressing are needed, how many ounces of each ingredient should be used?      Log On


   

Question 947287: A recipe for salad dressing uses 2 oz of olive oil for each 1 oz of red wine vinegar. If 42 oz of salad dressing are needed, how many ounces of each ingredient should be used?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
( olive oil ) / ( vinegar ) = 2/1
Let +x+ = ounces of vinegar needed
+42+-+x+ = ounces of olive oil needed
+2%2F1+=+%28+42-x+%29+%2F+x+
Multiply both sides by +x+
+2x+=+42+-+x+
+3x+=+42+
+x+=+14+
+42+-+x+=+28+
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28 ounces of olive oil are needed
14 ounces of red wine vinegar are needed