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11 February, 13:39

40 nails hold 5 rafters. 96 nails hold r rafters.

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Answers (2)
  1. 11 February, 16:39
    0
    Ratio and proportion

    nails:rafters=40:5

    40/5=96/r

    we can simplify left side

    8/1=96/r

    times both sides by r

    8r=96

    divide both sides by 8

    r=12

    12 rafters
  2. 11 February, 17:24
    0
    5 times 96 divided by 40 gives you 12. 96 nails hold 12 rafters.
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