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In a lilac paint mixture, 40% of the mixture is white paint, 20% is blue, and the rest is red. There are 4 cups of blue paint used in a batch of lilac paint. How many cups of white paint are used? How many cups of red paint are used? How many cups of lilac paint will this batch yield?

 Jan 14, 2020
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40 % white      20% blue     40%  red   

Red and white amounts are equal....and each is twice as much as blue   (40%   vs  20%)

    4 cups of blue     means 8 cups of white    and    8 cups of red      total = 20 cups   lilac

 
 Jan 14, 2020

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