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A salad dressing is 25% vinegar.Sue wants to make 2 cups of dressing.How much vinegar does she need?
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A salad dressing is 25% vinegar.Sue wants to make 2 cups of dressing.How much vinegar does she need?

User Brian Gerstle
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1 Answer

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Write and solve an equation of ratios:

vinegar 0.25 x
------------ = --------- = -----------
dressing 1.00 2 cups

Cross multiply. We get 0.5=x. Sue needs to use 1/2 cup of vinegar and 1 1/2 cups of the other ingredient(s).
User Armagedescu
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