How many more Man Need to be Engaged to Complete Work on Time?

A contractor undertakes to build a wall in 50 days. He employs 50 people. After 25 days, he finds that only 40% work is complete. How many more man need to be engaged to complete work on time?

  1. 20
  2. 25
  3. 30
  4. 35
Anurag Mishra Professor Asked on 28th November 2015 in Maths.
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  • 1 Answer(s)

    Answer: (3) 30

    Explanation:-
    A contractor undertakes to build a wall with 50 people = 50 days

    After 25 days, he finds that only 40% work is complete.
    Then, the remaining work = 1 – 40/100
    = 1 – 2/5
    = (5 – 2)/5
    = 3/5

    Then, the number of men to complete the remaining work =  3 x 50/5
    = 30

    So, 30 men need to be engaged to complete the work on time.

    Hence, the answer is (3) 30.

    Anurag Mishra Professor Answered on 29th November 2015.
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