8 ounces ;
Yellow:blue is a ratio of 2:3, meaning that 2/5 of the desired mixture is yellow. From this, you need to find how much yellow is necessary for 20 ounces. Well, 2/5 of the 20 ounces will be yellow paint, while the other 3/5 will be blue. Therefore: 5 2 ∗ 20 = 5 40 = 8
So she will need 8 ounces of yellow paint to get 20 ounces of the desired mixture. Hope this helps! :)
Sheila needs 8 ounces of yellow paint for her new mixture. The final mixture will be a total of 20 ounces, maintaining the same yellow to blue paint ratio of 2:3. Therefore, 2 parts of the mixture will be yellow paint, which calculates to 8 ounces from the total 20 ounces.
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