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14 January, 12:31

Mary can build 2 sand castles (c) in 4 hours (t). Write an equation in the form of c=rt that represents the relationship between the number of sand castles (c) and time (t), where r is the constant of proportionality.

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  1. 14 January, 13:01
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    2 = r (4)

    To find r, you've gotta divide it out.

    2/4 = r/4

    1/2 or 0.5 = r

    c = (0.5) t
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