Find The Number of Days in Which C Alone can do The Work? If

A and B together can do a piece of word in 30 days. B and C together can do it in 20 days. A starts the work on it for 5 days, then B takes up and works for 15 days. Finally C finished the work in 18 days. The number of days in which C alone can do the work when doing is separately is:

  1. 24 days
  2. 120 days
  3. 60 days
  4. 40 days
RohitKumar Default Asked on 18th August 2015 in Maths.
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