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28 May, 05:57

Lucy is a dress maker. She sews 4/7 of a dress in 3/4 of an hour. At this rate, how many dresses does Lucy sew in one hour?

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  1. 28 May, 06:36
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    This can be solve by proportinality

    amount of dress is directly proportional to time she make the dress

    4/7 = a (3/4) a = 4/7 / (3/4) a = 16/21

    so if she sew for 1 hr

    d = atd = 16/21 (1) d = 16/21 of a dress
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