The age of father 10 years ago was thrice the age of his son. Ten years hence, father's age was five times the age of the son. After 6 years, son's age will be?	Select:
A) 7:5 B) 7:0 C) 7:3 D) 7:2 E) 7:1
Let the age of father and son 10 years ago be 3x and x years respectively.   Then, (3x + 10) + 10 = 2[(x + 10) + 10]   3x + 20 = 2x + 40 =&gt; x = 20.   Required ratio = (3x + 10):(x + 10) = 70:30 = 7:3.Answer:7:3
<result>C</result>
The age of father 10 years ago was thrice the age of his son. Ten years hence, father's age was five times the age of the son. After 6 years, son's age will be?