George n mark can paint 720 boxes in 20 days , mark n harry 24,
Harry n george 15 days.
So total no. Of boxes painted by them ?

• Capacity of G + M = 720 / 20 = 36
  M + H = 720 / 24 = 30
  H + G = 720 / 15 = 48
  Combined capacity = 2 (G + H + M) = 114
  G + H + M = 114 / 2 = 57
  Now capacity of G = (G+H+M) - (H + M) = 57 - 30 = 27
  M = (G+H+M) - (H + G) = 57 - 48 = 9
  H = (G+H+M) - (G + M) = 57 - 36 = 21
  
  Given that G worked for 4 days, and mark for 8 and harry for 8 days
  So total work by them = 4 x 27 + 8 x 9 + 8 x 21 = 348
• 10 years agoHelpfull: Yes(10) No(0)
• IS this que is right?I hope it is to find the total no of days ?because it is given as 720 boxes
  if so ans is...
  (g+m)'s 1 day wrk=1/20
  (m+h)'s 1 day wrk=1/24
  (h+g)'s 1 day wrk=1/15
  adding...2(g+m+h)=1/20+1/24+1/15=57/360
  (g+m+h)=57/720
  so g,m &h finish the work in 57 days
  
  
• 11 years agoHelpfull: Yes(3) No(6)
• Capacity of G + M = 720 / 20 = 36
  M + H = 720 / 24 = 30
  H + G = 720 / 15 = 48
  Combined capacity = 2 (G + H + M) = 114
  G + H + M = 114 / 2 = 57
  Now capacity of G = (G+H+M) - (H + M) = 57 - 30 = 27
  M = (G+H+M) - (H + G) = 57 - 48 = 9
  H = (G+H+M) - (G + M) = 57 - 36 = 21
  
  Given that G worked for 4 days, and mark for 8 and harry for 8 days
  So total work by them = 4 x 27 + 8 x 9 + 8 x 21 = 348
  
• 9 years agoHelpfull: Yes(1) No(0)
• Capacity of G + M = 720 / 20 = 36
  M + H = 720 / 24 = 30
  H + G = 720 / 15 = 48
  Combined capacity = 2 (G + H + M) = 114
  G + H + M = 114 / 2 = 57
  Now capacity of G = (G+H+M) - (H + M) = 57 - 30 = 27
  M = (G+H+M) - (H + G) = 57 - 48 = 9
  H = (G+H+M) - (G + M) = 57 - 36 = 21
  
  Given that G worked for 4 days, and mark for 8 and harry for 8 days
  So total work by them = 4 x 27 + 8 x 9 + 8 x 21 = 348
• 8 years agoHelpfull: Yes(0) No(0)