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\(A\) and \(B\) can complete a task in \(20\) days. \(B\) and \(C\) can complete the same task in \(30\) days. If \(A\)

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by Vincen » Thu Jun 24, 2021 11:24 am
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\(A\) and \(B\) can complete a task in \(20\) days. \(B\) and \(C\) can complete the same task in \(30\) days. If \(A\) and \(C\) can complete the task in \(40\) days, arrange the efficiencies of \(A, B,\) and \(C\) in descending order.

A. \(A>B>C\)
B. \(A>C>B\)
C. \(B>A>C\)
D. \(B>C>A\)
E. \(C>A>B\)

Answer: C

Source: e-GMAT
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