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Sindrei [870]
3 years ago
6

A chef is going to use a mixture of two brands of Italian dressing. The first brand contains 6% vinegar, and the second brand co

ntains 11% vinegar. The chef wants to make 230 milliliters of a dressing that is 7% vinegar. How much of each brand should she use
Mathematics
1 answer:
Jobisdone [24]3 years ago
8 0

184 milliliters of the first brand and 46 milliliters of the second brand

Step-by-step explanation:

Step 1:

Let x be the number of milliliters of the first brand in the final mixture

Since the chef requires 230 milliliters, 230 - x would be the milliliters of dressing of the second brand

Step 2:

The first brand contains 6% vinegar, and the second brand contains 11% vinegar

Hence we have,

x * 6/100 + (230-x) * 11/100 = 230 * 7/100

0.06 x + 25.3 - 0.11 x = 16.1

0.05x = 9.2 => x = 184

Hence the 184 milliliters of the first brand is to be used

Step 3 :

Quantity of the second brand to be used is 230 - x = 230 -184 = 46 milliliters.  

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The furthest left x-value is -7. Notice it has a large open circle here that is not filled in. This means the function does not include -7 but includes numbers very close to it like-6.999999..... We sue use an inequality sign without an equal to to write -7. x >-7.

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3 years ago
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Step-by-step explanation:

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