The average weight of 5 persons sitting in a boat is 38 kg. The average weight of the boat and the persons sitting in the boat is 52 kg. What is the weight of the boat?

• 38*5= 190(total weight of 5 persons)
  52*6= 312(total weight of 5 persons with boat)
  
  312-190 = 122(weight of boat).
  
• 10 years agoHelpfull: Yes(1) No(0)
• Let x1...x5 be weight of persons and B is weight of boat.
  (x1+x2+...+x5)/5=38
  i.e.
  x1+x2+...+x5 = 190
  and (x1+x2+...+x5+B)/6=52
  therefore,
  B= (52*6)-190
  B= 122kg
• 10 years agoHelpfull: Yes(0) No(0)
• Average weight of 5 persons = 38 Kg
  Total weight of the 5 persons =38*5=190
  Total weight including the boat weight is
  =52*6=312
  Weight of the Boat = 312-190= 122 Kg
  
• 10 years agoHelpfull: Yes(0) No(0)
• Avg wt. Of boat = avg wt. Of (people+boat)- avg wt. Of people
  =52-38
  =14kg
• 10 years agoHelpfull: Yes(0) No(1)