man is 21 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: Pick
A) 14years  B) 26 years  C) 19 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 + 21) + 2 = 2(x + 2)   x + 23 = 2x + 4   x = 19.   answer :19 years
<result>C</result>
man is 21 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: