A man is 18 years older than his son. In eight years, his age will be twice the age of his son. The present age of this son is
Choose the correct option.
A) 5 years  B) 10 years  C) 15 years  D) 20 years  E) 25 years
Explanation:   Let's Son age is x, then Father age is x+18.   =&gt; 2(x+8) = (x+18+8)   =&gt; 2x+16 = x+26   =&gt; x = 10 years   Answer: Option 10 years
<result>B</result>
A man is 18 years older than his son. In eight years, his age will be twice the age of his son. The present age of this son is