Question 567885
Let age of son be x years. 
Age of father's be y years
Now according to ques.
  x+y=48
  Y=2x
So eq.becomes,
 x+y=48
2x-y=0
Adding these eq.
3x=48
x=16
y=2x =2×16=32
Age of son is 16
Age of father is 32.
Ik