140 men were employed to finish a certain work in 80 days. after 50 days.10 more men were engaged at the work , then how many days before will the work be finished?

• 140 men ll finish d work in 80 days
  140 men's 1 day work = 1/80
  1 men's 1 day 1 work = 1/140 * 80 = 1/11200
  
  After 50 days , part of work finished is
  50 * 1/80 = 5/8
  
  Remaining work = 1 - 5/8 = 3/8
  
  
  150 men's 1 day work 150 * 1/11200 = 3/224
  
  Remaining work can be completed in
  3/8 * 224/3 = 28 days
  
  [Since already 50 days over, + 28 days = 78 days... But before it was completed in 80 days ... so 80 - 78 = 2 days]
  
  so d work ll be completed before 2 days
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• thanx ma
  
• 10 years agoHelpfull: Yes(0) No(0)
• work done by 1 men in 1 day = 1/11200
  work done by 140 men in 50 days = 5/8
  work done by 150 men in 1 day = 3/224
  days required to complete 3/8th work = 224/3*3/8 = 28 days
  totals days req to complete work = 78
  work will be finished 2 days before
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