sixty men can build a wall in 40 days.but they begin the work together,5 men quit after 10 day.the time needed to build the wall is
45 49.5 47.5 non

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• actually 60 men can build a wall in 40 days
  suppose same 60 men work for 10 days
  then 5 men quit 55 men work for remaining 30 days
  then finally remaining work will be 30 * 5 =150 days work
  the 55 men can do the 150 days work in 2.72 days
  for completion they will take 42.72 days
• 10 years agoHelpfull: Yes(4) No(1)
• 60 men 40 days 1 work
  60 men 10 days 1/4 work
  work left= 1-1/4 = 3/4
  55 men 40 days 11/12 work
  55 men 1 day 11/480 work
  55 men 3/4 work 480/11 *3/4= 32.7 days(approx)
  total days= 32.7+10=42.7
  non
• 10 years agoHelpfull: Yes(3) No(3)