SOLUTION: A chef is using a mixture of two brands of Italian dressing. The first brand contains 9% vinegar, and the second brand contains 14% vinegar. The chef wants to make 380 milliliters

Question 328911: A chef is using a mixture of two brands of Italian dressing. The first brand contains 9% vinegar, and the second brand contains 14% vinegar. The chef wants to make 380 milliliters of a dressing that is 10% vinegar. How much of each brand should she use?
I have set up the equation as a system of linear equations, but am not sure if I did it correctly.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Let X be the amount of 9%, Y the amount of 14%.
.
.
Total volume:
1.
.
.
.
Concentration:

2.
.
.
.
Is that what you got?

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