Let a, b, c, and d stand for the fraction of a project that A, B, C, and D can do within each day, respectively.
I like your answer. It is interesting how in America this problem is solved differently from my home country.
I'm intrigued. How do people from your country solve this problem?
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The Best Performer
Anna (A), BIll (B), Cindy ©, and Dante (D) work on a project.
Together, A, B, and C can complete it in 10 days.
Together, B, C, and D can complete it in 11 days.
Together, C, D, and A can complete it in 12 days.
Together, D, A, and B can complete it in 13 days.
Who is the best performer? Prove your answer.
Posted 17 May 2013 - 04:32 AM
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