Seudónimo Seudónimo

26-01-2017
Mathematics

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

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kswizzzlle kswizzzlle

26-01-2017

5 times 96 divided by 40 gives you 12. 96 nails hold 12 rafters.

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apologiabiology apologiabiology

26-01-2017

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

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