# math

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A chef is using a mixture of two brands of Italian dressing. The first brand contains 7% vinegar, and the second brand contains 11% vinegar. The chef wants to make 280 milliliters of a dressing that is 10% vinegar. How much of each brand should she use?
first brand?
second brand?

• math -

solve

.07x + .11(280-x) = .1(280)

• math -

174

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