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Painting job

  1. Jan 10, 2007 #1
    A painting job can be completed by 7 painters in 43 days. If 28 more painters join the team 8 days after starting work on the job, then how many more days are required to complete the job?
     
  2. jcsd
  3. Jan 10, 2007 #2

    dextercioby

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    7 days ?

    Daniel.
     
  4. Jan 10, 2007 #3
    Yes::
    Solution:

    Total effort required by 7 painters for 43 days = 7 x 43 = 301 man-days.

    Initial effort by 7 painters for 8 days = 7 x 8 = 56 man-days.

    Job still requires 301 - 56 = 245 man-days, and there are 35 painters available to do it.

    Additional effort required by 35 painters for 245 man-days = 245 / 35 = 7 days.

    Thus, 7 more days are required to complete the painting job.
     
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