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27 December, 16:46

A pile of 20 sheets of card is 1cm high, how high is a pile of 50 sheets of card?

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Answers (2)
  1. 27 December, 17:10
    0
    1/20 =.05

    so each sheet is. 05 of a cm.

    50*.05 = 2.5

    by multiplying 50 (the number of sheet) by. 05 (the height of one card) you get 2.5 the height of 50 cards.
  2. 27 December, 17:39
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    20 / 1 = 50 / x ... 20 sheets to 1 cm = 50 sheets to x cm

    cross multiply

    (20) (x) = (1) (50)

    20x = 50

    x = 50/20

    x = 5/2 = 2 1/2 cm (or 2.5 cm) <==
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