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10 October, 09:30

Working alone, Elisa can sweep a porch in 11 minutes. Pranav can sweep the same porch in 13 minutes. Find out how long it would take them if they worked together.

A) 5.96 minutes

B) 5.21 minutes

C) 5.86 minutes

D) 4.87 minutes

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Answers (2)
  1. 10 October, 10:05
    0
    Answer is A

    Step-by-step explanation:

    Elisa, e = 11mins

    Prenav, p = 13mins

    time to finish, t

    1 = t (1/11 + 1/13) = t (24/143)
  2. 10 October, 13:00
    0
    Your answer is A 5.96 minutes
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