SOLUTION: A chef is using a mixture of two brands of Italian dressing. The first brand contains 8% vinegar, and the second brand contains 11% vinegar. The chef wants to make 300 milliliters

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Question 862748: A chef is using a mixture of two brands of Italian dressing. The first brand contains 8% vinegar, and the second brand contains 11% vinegar. The chef wants to make 300 milliliters of a dressing that is 9% vinegar. How much of each brand should she use?
Answer by lwsshak3(11628) About Me  (Show Source):
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A chef is using a mixture of two brands of Italian dressing. The first brand contains 8% vinegar, and the second brand contains 11% vinegar. The chef wants to make 300 milliliters of a dressing that is 9% vinegar. How much of each brand should she use?
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let x=amt of 9% vinegar to use in mixture
300-x=amt of 11% vinegar to use in mixture
..
8%x+11%(300-x)=9%*300
.08x+33-.11x=27
.03x=6
x=200
300-x=100
amt of 9% vinegar to use in mixture=200 ml
amt of 11% vinegar to use in mixture=100 ml