In a class of 40 students the average weight of 40 students is 40 kgs.x new students join the class whose average weight is y kgs. If x+y=50.
what is the maximum possible average weight of the entire class now?

• 34.23
  Total weight of 40 students=40*40=1600
  Total weight of x students=x*y
  As x+y=50, maximum x*y is possible with x=y=25
  Maximum possible average weight of the entire class=[1600+(x*y)]/(40+x)
  =(1600+625)/(40+25)=2225/65=34.23
• 10 years agoHelpfull: Yes(4) No(0)
• bt will it not there be an increase in the new average.answer is nt that one.pls check it
• 10 years agoHelpfull: Yes(0) No(0)