The age of father 4 years ago was four times the age of his son. Five years hence, father's age will be twice that of his son. The ratio of their present ages is:	Options
A) 41 : 17 B) 42 : 17 C) 44 : 19 D) 44 : 17 E) 44 : 21
Let the ages of father and son 4 years ago be 4x and x years respectively.   Then, (4x + 4) + 5 = 2[(x + 4) + 5]   4x + 9 = 2x + 18   x = 4.5.   Required ratio = (4x + 4) : (x + 4) = 22 : 8.5 = 44 : 17.   Answer: Option 44 : 17
<result>D</result>
The age of father 4 years ago was four times the age of his son. Five years hence, father's age will be twice that of his son. The ratio of their present ages is: