A+B paint 720 boxes in 20 days.B+C paint in 24 days.C+A in 15 days.A works for 4 days,B works for 8 days,C works for 8 days.total no. of boxes painted by them

• (a+b)in one day 720/20=36 box
  (b+c) in one day 720/24=30 box
  (c+a)in one day 720/15=48
  in 1 day all are 2(a+b+c)=36+30+48
  a+b+c=114/2=57 box
  so, a in one day=a+30=48 => a=27
  b in one day=b+48=57 =>b=9
  c in one day=c+36=57 =>c=21
  a work for 4 day =27*4=108
  b work for 8 day =9*8=72
  c work for 8 day =21*8=168
  so ,total no of boxes painted by them
  108+72+168=348 boxes painted by them
• 12 years agoHelpfull: Yes(29) No(0)
• It is 348 box.
• 12 years agoHelpfull: Yes(8) No(0)
• ans is 348
  
• 12 years agoHelpfull: Yes(5) No(0)
• 108+72+168=348 boxes
• 12 years agoHelpfull: Yes(3) No(2)
• 2(A+B+C)'s work in a day=1/20+1/24+1/15
  so A+B+C work=19/240
  now A's work=19/240-1/24=9/240
  so in 1 day a paints 9/240 *720 boxes=27 so in 4 days 27*4=108
  similarly
  b paints 72 n c paints 168
  so total is 348 boxes
• 12 years agoHelpfull: Yes(3) No(0)
• Ans is 376...
• 12 years agoHelpfull: Yes(1) No(11)
• ans should be 342boxes
• 12 years agoHelpfull: Yes(1) No(7)
• ans is 312
• 12 years agoHelpfull: Yes(1) No(5)