How many Days will The Job be Finished :

A team can do a particular task in 10 days. Another team can do the same task in 20 days. In how many days will the job be finished, if both the teams work together?

  1. 15/2 days
  2. 19/3 days
  3. 20/3 days
  4. 22/3 days
Anurag Mishra Professor Asked on 8th October 2015 in Maths.
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  • 1 Answer(s)

    Answer:  (3) 20/3 days

    Explanation:-
    A team can do a particular task = 10 days
    A team can do  in a day = 1/10

    Another team can do the same task = 20 days
    Another team can do in a day = 1/20

    Both teams work together in a day = 1/10 + 1/20
    = (2 + 1)/20
    = 3/20

    Then, both teams can work together = 20/3 days

    Hence, the answer is (3) 20/3 days.

    Anurag Mishra Professor Answered on 8th October 2015.
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