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4 March, 17:32

A u. s. dime has a thickness of 1 7/20 millimeters. Gary has a stack of dimes 78 3/10 millimeters tall. how many dimes does he have?

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  1. 4 March, 20:31
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    A thickness of a dime is:

    1 7/20 mm = 27/20 mm

    78 3/10 mm : 27/20 mm =

    = 783/10 : 27/20 =

    = 783/10 * 20/27 = (783 * 20) / (10 * 27) =

    = 15,660 / 270 = 58

    Answer: He has 58 dimes.
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