the average of 2 natural numbers is 10.One of the two numbers is then picked at roandom and multiplied by 2.The new average of the 2 numbers is?

• avg of x any y is 10 means x+y=20.
  consider x is doubled.
  new avg will be (2x+y)/2 = (2x+20-x)/2 = (x/2)+10
  consider y is doubled.
  new avg will be (y/2)+10
  In short, old avg is 10 and new avg is = 10 + (random no picked/2)
• 10 years agoHelpfull: Yes(2) No(0)
• avg of 2 natural no is 10 means no are 9 and 11
  now either of 9 and 11 is doubled
  
  avg :: (9+22)/2=15.5 or (18+11)/2=14.5
• 10 years agoHelpfull: Yes(1) No(2)
• let the two numbers be x and y
  
  (x+y)/2=10
  
  now suppose we multiply x by 2
  L.H.S.
  => (2x+y)/2
  => ((2x/2) + (y/2))
  
  it can be written as
  
  => ((x/2)+(x+2)+(y/2))
  
  as it is given that ((x/2)+(y/2))=10
  
  => new average = (10 + (x/2))
  
  similarly if instead of x we would have multiplied y by 2
  
  then new average would be 10 + (y/2)
  
  x can be written as
• 10 years agoHelpfull: Yes(0) No(2)