The age of father 6 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) 55 : 23  B) 43 : 23  C) 51 : 23  D) 53 : 23  E) 56 : 23
Let the ages of father and son 6 years ago be 3x and x years respectively.   Then, (4x + 6) + 5= 2[(x + 6) + 5]   4x + 11 = 2x + 22   x = 5.5.   Required ratio = (4x + 6) : (x + 6) = 28 : 11.5 =56 : 23.   Answer: Option 56 : 23
<result>E</result>
The age of father 6 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: