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  1. Nutball

    Sarah takes 6 hours to paint a fence and John takes 12 hours to paint the same fence.

    I never got free reads, but they gave me a few seconds to take a screen shot of the article.
  2. Nutball

    Sarah takes 6 hours to paint a fence and John takes 12 hours to paint the same fence.

    It takes him twice as long, right, so he will do half of what she does, or 1/3 of the combined total.
  3. Nutball

    Sarah takes 6 hours to paint a fence and John takes 12 hours to paint the same fence.

    Oh, wait, I just read the article on NY times and saw the fence is twice as long, so 8hrs?
  4. Nutball

    Sarah takes 6 hours to paint a fence and John takes 12 hours to paint the same fence.

    My initial answer is 4hrs, but I rethunk it, and still got 4 hrs However long she works, he does half the work. If she works 4 hrs, he will have worked 4 hrs too, but completed half the work (2 of her hours) which completes 6 of her hours in total.
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