A and B can paint 720 boxes in 20days.B and C can do it in 24days.C and A can do it in 15days.A works for 4days,B works for 8days,C works for 8days.Total number of boxes paint by them is:

• A and B can paint 720 boxes in 20days.B and C can do it in 24days.C and A can do it in 15days.
  A and B can paint 36 boxes in 1 day.
  B and C can paint 30 boxes in 1 day.
  C and A can paint 48 boxes in 1 day.
  A+B+C together can paint (36+30+48)/2= 57 boxes in 1 day.
  A+B+C together can paint 4*57=228 boxes in 4 days.
  B+C together can paint 4*30=120 boxes in 4 days.
  
  A works for 4days,B works for 8days,C works for 8days.Total number of boxes paint by them = 228+120 = 348
  
• 12 years agoHelpfull: Yes(50) No(4)
• a+b+c= 19/240 ( 1 day work)
  in 4 days they can paint (720*19/240)*4 = 228
  after 4 days only b and c paints, they can paint (1/24 * 720)*4= 120
  228+120 = 348
• 12 years agoHelpfull: Yes(16) No(4)
• a+b=720/20=36boxes for one day....b+c=720/24=30boxes for1 day and c+a=720/15=48boxes for one day....by calculating these 3 equations we get a,b,c values i.e a=27,b=9,c=21..for one day..so here a worksfor 4 days so a=27*4=108,b=9*8=72and c=21*8=168..so a+b+c=108+72+168=348
• 12 years agoHelpfull: Yes(13) No(0)
• 348 boxes will be painted..
• 12 years agoHelpfull: Yes(10) No(3)
• A+B together can paint 4*36 boxes in 144 days
  B+C together can paint 4*30 boxes in 120 days
  A+C together can paint 4*48 boxes in 192 days
  total number of boxes paint by them is 120+144+192=456 boxes
• 12 years agoHelpfull: Yes(0) No(12)
• boxes will be painted by them 372
• 12 years agoHelpfull: Yes(0) No(9)