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30 June, 19:19

A person is to install five devices each 6 7/8 inches wide with 3 1/2 inches between switches. how much space will be needed to mount these switches?

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  1. 30 June, 21:14
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    Refer to the diagram shown below.

    w = 6 7/8 in = 6.875 in, the width of each device.

    d = 3 1/2 in = 3.50 in, the space between teo devices.

    The total space needed is

    D = 4 (w+d) + w

    = 5w + 4d

    = 5*6875 + 4*3.5

    D = 48.375 in or 48 3/8 in

    Answer: 48 3/8 inches or 48.375 inches
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