45. There are 5 boxes in a cargo hold. The weight of the first box is 200 kg and the weight of the second box is 20% higher than the weight of the third box, whose weight is 25% higher than the first box's weight. The fourth box at 350 kg is 30% lighter than the fifth box. Find the difference in the average weight of the four heaviest boxes and four lightest boxes.

• answr- 75kgs..
  4 heavy boxes-500,350,300,250
  4 light boxes- 200,250,300,350
  avg of heavy- 350
  avg of lig- 275
  diff=75
• 10 years agoHelpfull: Yes(30) No(8)
• ans=63.75
  4 heavy boxes are 455+350+250+300=1355/4=338.75
  4 lighter boxes are 200+250+300+350=1100/4=275
  diff=63.75
• 10 years agoHelpfull: Yes(17) No(3)
• according to the conditions given the weights of the boxes are 200,300,250,350,500
  the sum of weights of 4 heaviest boxes are 1400
  the sum of weights of 4 lightest boxes are 1100
  the diff. is 300
  taking the avg of diff for 4 boxes...the ans is 75
• 10 years agoHelpfull: Yes(8) No(1)
• now the weight of 1st box is 200kg,2nd box is 300 kg,3rd box is 250kg,4th box is 350kg,5th box is 455kg
  then avereage of light weight boxes is 200+250+300+350=1100/4=275
  average of heavy boxes is 455+350+300+250=1355/4=338.75
  now diff is338.75-275=63.75 ans
  
  ALTERNATE METHOD IS
  take the maximum weight of the heavy box that is=455kg
  minimum weight of the light weight box is=200kg
  diff is 255/4=63.75 ans
• 10 years agoHelpfull: Yes(4) No(0)
• ans would be 76.25,4 heaviest boxes are 455,350,300,250.avg=351.25,lighter boxes are 200,250,300,350,avg=275,ans=76.25
• 10 years agoHelpfull: Yes(3) No(5)
• 75
  (500+350+300+350)/4-(200+250+300+350)/4=75
• 10 years agoHelpfull: Yes(2) No(0)
• 200->300->250->350->500
  1st 2nd 3rd 4th 5th
  (1400/4)-(1100/4)=75
• 10 years agoHelpfull: Yes(2) No(0)
• ans is 112.5
• 10 years agoHelpfull: Yes(1) No(5)
• answr-37.5
  the four heavy boxes are=245,250,350&300
  the light boxes are=200,250,245,300
  the diff is 45+105/4=37.5
• 10 years agoHelpfull: Yes(1) No(0)
• 5th box is 500 .
  
  x(1-30/100)= 350
  x= 500
• 10 years agoHelpfull: Yes(1) No(0)
• avg of 4 heavy boxes=(455+350+250+300=1355/4)=338.75
  avg of 4 light boxes=(200+250+300+350=1100/4)=275
  diff=63.75
  
  
• 10 years agoHelpfull: Yes(0) No(1)
• 5th box is 455 or 500?
  
• 10 years agoHelpfull: Yes(0) No(0)
• 
  if we calculate as: x(1-30/100)=350,then we get weight of fifth box as 500kg.
  But if we calculate as:350(1+30/100),then we get weight of fifth box as 455kg.
  why is this so?? why r the weights not coming equal the alternate ways...if anyone can tell...??
• 8 years agoHelpfull: Yes(0) No(0)