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13 August, 08:17

If it takes 7lb of flour to make 3 loaves of bread, how much flour is needed to make 4 loaves of bread?

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  1. 13 August, 09:07
    0
    28/3 or 9 1/3 pounds

    Step-by-step explanation:

    Let's set up a proportion using the following setup:

    pounds/loaves=pounds/loaves

    We know that 7 pounds of flour is needed for 3 loaves. We don't know how many pounds are needed for 4 loaves, therefore we can say x pounds are needed for 4 loaves.

    7 pounds / 3 loaves = x pounds / 4 loaves

    7/3=x/4

    We want to find out what x (flour needed for 4 loaves) is. We have to get x by itself.

    x is being divided by 4. We need to perform the inverse operation. The opposite of division is multiplication. Therefore, we should multiply both sides of the equation by 4.

    4 * (7/3) = (x/4) * 4

    4*7/3=x

    9.333333=x

    x=9.33 or 28/3 or 9 1/3

    It will take 28/3 or 9 1/3 pounds of flour to make 4 loaves of bread.
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