A man is 40 years older than his son. In six years, his age will be twice the age of his son. The present age of this son is Pick one:
A) 31 years  B) 32 years  C) 33 years  D) 34 years  E) 35 years
Explanation:   Let's Son age is x, then Father age is x+40.   =&gt; 2(x+6) = (x+40+6)   =&gt; 2x+12 = x+46   =&gt; x = 34 years   Answer: Option 34 years
<result>D</result>
A man is 40 years older than his son. In six years, his age will be twice the age of his son. The present age of this son is