In How much will They take to Complete the Work? If

Dinesh and Ramesh can independently complete a piece of work in 80 and 120 minutes respectively. If they work together, how much time will they take to complete the work?

  1. 24 minutes
  2. 100 minutes
  3. 48 minutes
  4. 200 minutes
anilpandey Default Asked on 25th July 2015 in Maths.
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  • 1 Answer(s)

    Answer: (1) 24 minutes
    Explanation:-
    DInesh can complete a piece of work = 80 minutes
    Dinesh can work in a minute = 1/80

    Ramesh can complete  work = 120 minutes
    Ramesh can work in a minute = 1/120

    They together can work in a minute = 1/80 + 1/120
    = (3 + 2)/120
    = 5/120
    = 1/24
    Then, they can complete the work = 24 minutes.
    Hence, the answer is (1) 24 minutes.

    Anurag Mishra Professor Answered on 26th July 2015.
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