How Many will Trees Cut in 12 hour? If

20 men can cut 30 trees in 4 h. If 4 men leave the job, how many trees will be cut in 12 h?

  1. 72
  2. 80
  3. 68
  4. 79
Desire Adnan Default Asked on 2nd August 2015 in Maths.
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  • 1 Answer(s)

    Answer: (1) 72
    Explanation:-
    20 men cut tree in 4 hr. = 30
    20 men  cut tree  in 1 hr. = 30/4
    Then, 1 men cut tree in a hr = 30/4 x 20
    = 3/8
    4 men left,
    Then, remaining men = 16
    16 men cut tree in 12 h. = 3 x 16 x 12/8
    = 3 x 2 x 12
    = 6 x 12
    = 72 tree
    If four men leave the job, 72 trees will be cut in 12 hr.

    Anurag Mishra Professor Answered on 3rd August 2015.
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