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16 December, 02:03

10. A house painter can finish a house in 6 hours. His partner can finish the same house in 12 hours. Which of the

following is the number of hours it would have taken them to finish painting the house if they had worked together?

A. 3 hours B. 4 hours C. 6 hours D. 9 hours

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Answers (1)
  1. 16 December, 03:31
    0
    The answer is D. 9, you just have to do an average wich is (12+6) : 2 and there you have it
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