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26 August, 09:29

Carl can do a particular job in 4

hours. It takes Mike 6.5 hours to

do the samejob.

How long will it take the boys to

complete the job if they work

together?

+2
Answers (2)
  1. 26 August, 11:07
    0
    The time of working together is x

    So

    1/x=1/4+1/6.5

    x = 2.48

    So the time of working together is 2.48 hrs
  2. 26 August, 11:19
    0
    2.5 hours
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