The average weight of class is X kg (some number) after adding wt of the teacher avg. wt. of class becomes Y kg then what is the weight of the teacher?

• let number of student=n
  total wt. of the students = nx
  if we count the of teacher then total Wt. = (n+1)y
  Wt of teacher = (n+1)y-nx
  
• 11 years agoHelpfull: Yes(11) No(1)