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26 December, 21:11

A group of students recycles 7 2/3 pounds of glass and 9 3/4 pounds of paper. How many pounds of paper and glass did the kids recycle all together?

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  1. 26 December, 23:36
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    17 5/12 lb total

    Step-by-step explanation:

    Find the total weight of the materials recycled:

    7 2/3 lb + 9 3/4 lb

    Here the LCD is 12. (Both 3 and 4 divide evenly into 12.)

    Rewriting 7 2/3 lb + 9 3/4 lb with the LCD 12, we get:

    7 8/12 lb + 9 9/12 lb, or 16 17/12 lb.

    The fraction here must be reduced. We get

    17 5/12 lb total (Recognize that 17/12 = 1 5/12.)
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