Ram,shyam n hari can do a work in 8,10 n 12 days individually.if they start working together and after 2 days ram leaves and shyam leaves 3 days before the completion of work.how many days taken for the completion of work??

• let x be the no of days for completion of work,then
  2/8+(x-3)/10+x/12=1
  on solving this eq we get x=63/11 days
• 12 years agoHelpfull: Yes(45) No(3)
• (r+s+h) 1's day work=1/8+1/10+1/12=37/120
  then 2's day work of them=2*37/120=37/60
  and work done by hari in 3 day =1/12*3=1/4
  so the remaning work =1-(37/60+1/4)=2/15
  sayam and hari 1's day work=(1/10)+(1/12)=11/60
  then no of day to compleate remaning work(2/15) is =(60/11)*(2/15) = 8/11 day
  then the totel no of day =2+3+(8/11) = 5+(8/11) =63/11 is ryt ans.
• 12 years agoHelpfull: Yes(33) No(0)
• sorry it will be 63/11 @pankaj take 150 instead of 120 so he got remaining as 46 which should be 16
• 12 years agoHelpfull: Yes(9) No(0)
• take Lcm of 8,10,12 which is 120..so assume 120 units of work,,
  ram do 15 units per day..
  shyam do 12 units per day
  hari do 10 units per day
  so if they work together 37 units of work wil be one per day..after 2 days whn ram leave
  74 units of work wil be finishd
  remaining work wil be 150-74=76
  
  in last 3 days only hari works
  so hari can do 30 units of work in last 3 days
  remaining work is 76-30=46
  which ws done by shyam n hari togethr in 46/22 days so in all
  2+3+ (23/11)=78/11 days are req to complete the wrk
• 12 years agoHelpfull: Yes(5) No(5)
• 2/8+(x-3)/10+x/12=1
  on solving the above equation
  x=63/11
• 12 years agoHelpfull: Yes(4) No(0)
• (r+s+h) 1's day work=1/8+1/10+1/12=37/120
  then 2's day work of them=2*37/120=37/60
  and work done by shyam=1/8*3=3/8
  so the remaning work =1-(37/60+3/8)=1/12
  sayam and hari 1's day work=(1/10)+(1/12)=11/60
  then no of day to compleate remaning work(1/12) is =(60/11)*(1/12) = 5/11 day
  then the totel no of day =2+3+(5/11) = 5+(5/11) =60/11 is ans
• 12 years agoHelpfull: Yes(3) No(5)
• ans is 63/11.......
• 12 years agoHelpfull: Yes(2) No(2)
• 2/8 +(x-3)(1/10 +1/12)+3/12 =1
  x=78/11
• 12 years agoHelpfull: Yes(1) No(5)
• let x be the total no. of days
  x/12 + (x-2)/8 + (x-3)/12 = 1
  x=186/47
• 12 years agoHelpfull: Yes(1) No(3)
• 53/11 is answer
  
• 12 years agoHelpfull: Yes(0) No(9)
• sory for my mistake yr ...it wil be 120 instead of 150...
• 12 years agoHelpfull: Yes(0) No(2)
• i think 60/11 option plz...............
• 12 years agoHelpfull: Yes(0) No(4)
• s=12+9.8+3.6=25.4
• 12 years agoHelpfull: Yes(0) No(3)
• let x be the no of days for completion of work,then
  2/8+(x-3)/10+x/12=1
  on solving this eq we get x=63/11 days
• 12 years agoHelpfull: Yes(0) No(4)
• answer is 7 days
  
• 12 years agoHelpfull: Yes(0) No(1)