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  • 15-05-2019
  • Mathematics
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A man can make 12 birdhouses in eight hours how many hours will it take to make 30

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s1m1
s1m1 s1m1
  • 15-05-2019

12 birdhouses in 8 hours

30 birdhouses in ? hours

?=30x8/12=240/12= 20 hours

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