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26 October, 04:56

Kelly is making a beaded bracelet with beads that measure 4 mm and 7.5 mm long. If the bracelet is 15 cm long and Kelly uses the same number of each type bead, about how many beads will she use?

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  1. 26 October, 05:10
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    Answer: 260.869 bead

    In this case, Kelly will use the same number of each type bead. Then you must calculate the bead mean length. The calculation will be:

    2 bead = 4mm + 7.5mm

    2 bead = 11.5mm

    1 bead = 5.75m

    Then, divide the bracelet length with bead mean length

    15cm x 100mm/cm / (5.75/bead) = 260.869 bead.
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