16. In a shopping mall with a staff of 5 members the average age is 45 years. After 5 years a person joined them and the average age is again 45 years. What’s the age of 6th person?

• Earlier total age= 45*5=225
  after 5 yrs , age of 5 persons total will be =(45+5)*5=250
  after adding a person the total age is 45*6 = 270
  Hence age of new person = 270-250 = 20 years
• 12 years agoHelpfull: Yes(19) No(4)
• since the sum of ages of 5 people are 225 and after five years their sum of age will be 250. so, (250 + x)/6 = 45, hence the answer is 20 years.
• 12 years agoHelpfull: Yes(7) No(2)
• AVERAGE AGE OF 5 MEMBERS = 45 YEARS
  TOTAL AGE = 45*5 = 225
  AFTER 5 YEARS TOTAL AGE = 225 + 5*5 = 250
  AGE OF 6TH PERSON = "X" YRS
  (250+X)/6 = 45
  250+X=270
  X = 20 YRS
  
  AGE OF 6TH PERSON = 20 YEARS
• 12 years agoHelpfull: Yes(5) No(1)
• now total age is X then X/5=45 xo X= 225
  if y is age of 6th person
  after 5 year ((225+25)+ Y)/6=45
  y=270-250= 20 years
• 12 years agoHelpfull: Yes(4) No(0)
• now total age= 45*5=225
  after 5 yrs total will b=(45+5)*5=250
  after add a person the total will b= (45+5)*6=300
  so the 6th person's age=300-250=50
• 12 years agoHelpfull: Yes(3) No(10)