6 persons standing in queue with different age group, after two years their average age will be 43 and seventh person joined with them. Hence the current average age has become 45. Find the age of seventh person?
a) 43 b)69 c)52 d)31

• ans is:- b)69
  After 2 yrs,
  avg age of 6=43
  so, total age=43*6=258
  so,current age at present=258-(6*2)=258-12=246
  let current age of 7th person is x.
  then,(246+x)/7=45
  solving we get,x=69.
• 14 years agoHelpfull: Yes(12) No(0)
• Ans : b 69
  Let the sum of current ages og 6 persons =x
  Given Average age of 6 perosn after 2 years =43
  x+6(2)/6=43 >> x+12=258 >> x=246
  Let the seventh's person age ibe y
  Given Current avg age of 7 = 45
  Sum of current 6 person's age (x) + Seventh person's age (y) /7= 45
  246+y=45(7)
  y= 315 -246 = 69
  Hence Seventh person's age = 69
• 14 years agoHelpfull: Yes(4) No(0)
• x+12/6=43
  x=246
  then
  x+7th/7=45
  7th=69
  
• 10 years agoHelpfull: Yes(1) No(0)
• let x =sum of total age of 6 persons and y = age of seventh person
  (x+12)/6=43
  and (x+y)=45
  then y=69
• 9 years agoHelpfull: Yes(0) No(0)