The average age of a husband and his wife was 23 years at the time of their marriage. After five years they have a one year old child. What is the average age of the family ?

Option
1) 21 years
2) 20 years
3) 18 years
4) 19 years

• after 5 years the average age of the two will be 28.
  now the child is one year old ,
  total age = 28*2 + 1 = 57
  average age = total age/family members(3)
  => 57/3 = 19
• 9 years agoHelpfull: Yes(22) No(2)
• given average =23
  therefore total age = 23 *2=46
  after 5 years total age of father and mom =56
  they have 1yr old child at 5th year .. therefore total age is 57
  hence average age of family is 57/3 = 19yrs
• 9 years agoHelpfull: Yes(7) No(0)
• wife=23,fathar=23;
  after 5 year=>(23+5)+(23+5)+1=>57/3=>19
• 9 years agoHelpfull: Yes(4) No(1)
• 3->(23*2+5*1)+1
• 9 years agoHelpfull: Yes(0) No(0)
• 4)19 years
• 9 years agoHelpfull: Yes(0) No(0)
• 4=23+5/2+1
• 9 years agoHelpfull: Yes(0) No(0)
• let X and Y be ages of husband and wife
  At the time of marriage average of their ages{X+Y}/2=23 ==>X+Y=46---(1)
  after 5yrs they have 1 yr old child
  [(X+5)+(Y+5)+1]/3=[X+Y+11]/3---(2)
  substitute 1 in 2
  (46+11)/3=19yrs is average age of the family
• 9 years agoHelpfull: Yes(0) No(0)
• Ans:19
  Consider current age of husband & wife as 28, child's age is 1 ,
  total of age is 28+28+1=57, average is 57/3=19.
• 9 years agoHelpfull: Yes(0) No(0)
• Avg= (H+W)/2
  (H+W) = 23*2 = 46
  After 5 yrs (H+5) & (W+5)
  (H+W) = 56
  Avg = (H+W+Child) / 3
  56+1 / 3
  19 yrs
  
• 9 years agoHelpfull: Yes(0) No(0)
• let H=husband's age
  W=wife's age
  (H+W)/2=23
  So, H+W=46
  after 5 years
  C(child age)=1 year
  So
  average age after 5 years AVG =(H+5+W+5+1)/3
  =(H+W+11)/3
  we know H+W=46
  So
  average age after 5 years AVG =(46+11)/3=19
  so answer is 19
• 7 years agoHelpfull: Yes(0) No(0)