The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is:

A. 35 years B. 40 years
C. 50 years D. None of these

• B.40
  Lets assume fathers,mothers and child's age before 3 years is x,y,z respe.
  therefore (x+y+z)/3=27
  now x+y+z=27*3=81
  and (y-2+z-2)/2=20
  y+z=40
  on calculating both equations x=37
  hence present age x+3=40
  
  
• 12 years agoHelpfull: Yes(3) No(5)
• (h-3+w-3+c-3)/3=27-----(1)
  (w-5+c-5)/2=20-----(2)
  by solving (1) and (2) we get
  h=40
• 9 years agoHelpfull: Yes(1) No(0)