Father's age is 5 times his son's age .4years back the father was 9times older than son.find the father's present age?

• let son's age= x
  therefore father's age=5x
  now, 9(x-4)=(5x-4)
  x=8
  father's age = 5x=5*8=40 years
• 11 years agoHelpfull: Yes(2) No(3)
• father is 5 times sons age. hence f=5s...(1)
  4 yrs back f was 9*older than son, hence (f-4)=9(s-4)...(2)
  put f=5s from (1) in (2). you get s=8. hence fathers age=5*s=5*8=40years
• 11 years agoHelpfull: Yes(2) No(0)
• Let father's age b F,son's b S
  1)F=5S
  2)F-4=9(S-4)+(S-4)=10S-40(since father is 9 times older than son)
  From 1 and 2 F=36
• 11 years agoHelpfull: Yes(0) No(2)