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Final answer:In the given macaroni and cheese recipe, the ratio of flour to milk is 1/3 to 1 1/5. To find the quantity of milk needed for 2 cups of flour, we can set up and solve aproportion. The solution is approximately 7 1/5 cups of milk.Explanation:The question involves a concept in mathematics known asratios. In recipes, theamount of ingredientsused are usually in proportion to each other. In the given macaroni and cheese recipe, the ratio of flour to milk is 1/3:1 1/5.To find out how much milk is needed for a bigger batch using 2 cups of flour, we can set up the following proportion: (1/3) / (1 1/5) = 2 / x. Solving for x will give us the amount of milk needed. If we solve the equation, we get approximately 7 1/5 cups of milk for the 2 cups of flour.Learn more about Ratios here:brainly.com/question/32531170#SPJ11...

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