In a restaurant with a staff of 5 members, the avg age is 45 yrs. after 5 years, a person joins them and the avg age is again 45 yrs. what is the age of 6th person?

• total age of 5 members = 5*45= 225
  after 5 years the total age of 5 members becomes, 225+25= 250
  let the age of the 6th member be x yrs
  therefore; (250+x)/6= 45 => x= 20 yrs
• 14 years agoHelpfull: Yes(26) No(0)
• total age of the 5 person=5*45=225,
  after 5 yr ,total age will be=225+(5*5)=250,
  total age of the 6 person=6*45=270,
  age of the 6th person=270-250=20
• 14 years agoHelpfull: Yes(8) No(0)
• 20 years
• 14 years agoHelpfull: Yes(5) No(0)
• age of 5 members is 45*5=225.
  total age after 5 years=225+(5*5)=250
  thus 250+x=(45*6)
  x=20
• 14 years agoHelpfull: Yes(5) No(0)
• as the 6th person join after 5 years so the avg age of 5 person after years=45+5=50
  now, 6th person joins so,
  (5*50+x)/6=45
  x=20.
• 14 years agoHelpfull: Yes(5) No(0)
• present avg. age of 5 person=45. so total sum of there age is 45*5=225.
  after 5 yrs there total sum will be 225+(5*5)=225+25=250.
  after 5 yrs avg age of 6 person is also 45.. so there total age is 45*6=270.
  therefore age of the 6th person is 270-250=20 yrs(ans)
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• 20 year
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• 20
• 14 years agoHelpfull: Yes(3) No(0)
• it should be 20 yrs...
• 14 years agoHelpfull: Yes(2) No(0)
• 45
• 14 years agoHelpfull: Yes(0) No(14)