There are 720 boxes, A & B can paint them in 24 days, B&C can paint them in 16 days, A&C in 20 days. If A paints for 4 days, B for 8 days and C for 8 days, how many boxes will be painted?

• sol; there are total 720 boxes
  (A+B) will paint in one day=720/24=30 boxes
  (B+C) will paint in one day=720/16=45 boxes
  (C+A) will paint in one day=720/20=36 boxes
  now 2(A+B+C) will paint in one day=(30+45+36) boxes
  so (A+B+C) will paint box in one day=111/2 boxes
  now A will paint in one day=(111/2)-45=21/2 boxes
  A will paint in 4 days=(21/2)*4=42 boxes
  B will paint in one day=(111/2)-36=39/2 boxes
  so B will paint in 8 days=(39/2)*8=156 boxes
  C will paint in one day=(111/2)-30 =51/2 boxes
  so C will paint in 8 days=(51/2)*8=204
  so the total boxes will be painted=42+156+204=402 boxes
  ans. is 402 boxes
• 11 years agoHelpfull: Yes(52) No(0)
• ans 402:)
  b&c cn complte work in 16 days together. together in 8 days they cn complete half of the work. .it means they can paint 360 boxes in 8 days working togethr.
  now how much a does in 4 days cn be calculated using ol the three equation drwan by the given statements. .
  so in 4 day a alone can paint 42 boxes.
  total 42+360= 402
• 11 years agoHelpfull: Yes(10) No(3)
• to solve this..
  a=10.5
  b=19.5
  c=25.5
  then a=10.5*4=42
  b=19.5*8=156
  & c=25.5*8=204
  then..total boxes will be painted...
  42+156+204=402 is the answer...
• 11 years agoHelpfull: Yes(9) No(0)
• ans is 402...
• 11 years agoHelpfull: Yes(5) No(1)
• my ans is 768
• 11 years agoHelpfull: Yes(0) No(9)
• plzz explain..
• 11 years agoHelpfull: Yes(0) No(4)
• 532.........
• 11 years agoHelpfull: Yes(0) No(6)
• 480; a+b+c=30 ans=(720*2)/3.
• 11 years agoHelpfull: Yes(0) No(5)
• a=4days me 28 box paint
  b=8 days me156 box paint
  c=8days me 204 box
  so total is 388 ans.....
• 11 years agoHelpfull: Yes(0) No(6)
• is the ans 366 box ?
• 11 years agoHelpfull: Yes(0) No(18)