A takes 2 hours to make a publication. B takes 10 hours to make a publication. Find the time taken by them to make two publications, working independently.
(a) 12 hours
(b) 11 hours
(c) 22 hours
(d) None

• Both are working independently....
  A will complite his work in 2 hrs
  Ans during this hours B also complited 1/5 his work
  and remaining in 8 hours
  so reqd Time = 2+8 = 10 hrs
• 11 years agoHelpfull: Yes(22) No(2)
• since they are working independently hence to make 2 publication time taken would be 12
  A will take 2hrs to make one publication and B will take 10hrs to make another one.
  hence and is (a)12hrs
  
  
  
  
  
  
  
  
  
  
  
  
• 11 years agoHelpfull: Yes(9) No(12)
• 10 hrs...
  When they will work A will take 2hrs and B will take 10 hrs.
  So it willy be 10 hrs.. coz within 10 hrs A will complete its publication...
• 11 years agoHelpfull: Yes(7) No(2)
• None... as it is not mentioned in the question that each one has to make 1 each. with in 4 hours A will make 2 publications.
  So, answer is None
  
  as per me this is the answer.. am i right?
• 11 years agoHelpfull: Yes(4) No(5)
• 3hr 36min
  i think
  coz A completes work in 2hrs in that 2 hrs B completes 2 parts of work and is left wid 8 parts now A can complete that 8 parts in 1hr 36 mins so total
  3hrs 36min ( since total outcome shud be effecient one)
• 11 years agoHelpfull: Yes(2) No(1)
• 12 hrs
  ans...?
• 11 years agoHelpfull: Yes(1) No(2)
• I think the answer is 12 hours ???
• 11 years agoHelpfull: Yes(0) No(2)
• 4 hrs as "A" would complete two publications in 4 hrs.and since they work indepentendly,so, it can be said that they completed two publications in 4hrs.
• 11 years agoHelpfull: Yes(0) No(0)
• may be 10 or 12 ......
• 11 years agoHelpfull: Yes(0) No(0)
• 10 hrs...
  B takes 10hrs to make a publication and A only takes 2hrs
• 11 years agoHelpfull: Yes(0) No(0)