Mirna11 Mirna11
  • 21-11-2016
  • Mathematics
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Mary can paint a house 12 hours. if Nancy helps, it takes them 2 hours. without help, how long would it take Nancy to complete the same job?

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FlashZoom
FlashZoom FlashZoom
  • 21-11-2016
i would say it takes Nancy 10 hours
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