A man is 25 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  Select
A) 21 B) 22 C) 20 D) 18 E) 23

Rationale: "explanation : let the son ' s present age be x years . then , man ' s present age = ( x + 25 ) years = > ( x + 25 ) + 2 = 2 ( x + 2 ) = > x + 27 = 2 x + 4 so , x = 23 . answer : e"
Answer: E