Arecipe calls for 3 cups of milk to accommodate 8 people. however, you are preparing food for 20 people. what are the number of cups of milk you will need for 20 people? use a proportion to solve.

The original recipe is 3 cups for 8 people, which can be written as a proportion of 3/8

You want to make enough for 20 people, let X be the number of cups required, so the proportion for this would be x/20.

Now you have two proportions, set them to equal:

3/8 = x/20

Cross multiply:

(3*20) = (8*x)

Simplify"

60=8x

Divide both sides by 8:

x = 60/8

x = 7.5

You will need 7.5 cups ( 7 1/2 as a fraction)

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step-by-step explanation: