man is 20 years older than his son. In two years, his age will be twice the age of his son. The present age of his son is:	Choose the correct choice from the following
A) 14years	B) 26 years	C) 17 years	D) 18 years	E) 22 years
Let the son's present age be x years. Then, man's present age = (x + 20) years.   (x + 20) + 2 = 2(x + 2)   x + 22 = 2x + 4   x = 18.   answer :18 years
<result>D</result>
man is 20 years older than his son. In two years, his age will be twice the age of his son. The present age of his son is: