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12 January, 09:02

A book shelf is 3 1/2 feet long. Each book on the shelf is 5/8 inches wide. How many books will fit on the shelf?

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  1. 12 January, 09:31
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    First convert 3 and 1/2 to imporoper

    3 and 1/2=6/2+1/2=7/2 feet

    convert to inches

    7/2 times 12=84/2=42 inches

    k so

    total space used=number of books times space each book uses

    total space possible=42

    space each book uses=5/8

    so

    42=numberofbooks times 5/8

    multiply both sides by 8/5 to clera fraction (5/8 times 8/5=40/40=1)

    336/5=number of books

    67.2=number of books

    since you cannot fit 0.2 book (besides being useless or very small), we round down

    67 books
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