aveage age of 6 person is decreased by 1 year when one person is included in this group.find the age of new man,if average age of 6 person was 39 years.

• (x1+x2+...x6+x7)/7=38; x1+x2+...x6=6*39 from this we get x7=32 years
• 8 years agoHelpfull: Yes(1) No(1)
• 39-38=1
  1*7=7
  so new man's age must be 7 year less then 39(average age of 6 person)
  so ans.39-7=32 year
• 8 years agoHelpfull: Yes(1) No(0)
• Ans. 32
  Sum of age of six persons = 6*39 = 234
  Average age of six persons + new person = average age of six person-1
  = 38
  234+Age of new person = 38 * 7
  Age of new person = 266-234
  = 32 years
• 8 years agoHelpfull: Yes(0) No(0)
• ans: 32
  total age of 6 persons =39*6=234
  if avg decreases by 1 , 38*7=266
  the new person age =266-234=32
• 8 years agoHelpfull: Yes(0) No(0)