A manâ€™s current age is (2/5) of the age of his father. After 6 years, he will be (1/2) of the age of his father. What is the age of father at now?	Pick one: A) 40 B) 45 C) 38 D) 50 E) 30

Rationale: "let , father â € ™ s current age is a years . then , man â € ™ s current age = [ ( 2 / 5 ) a ] years . therefore , [ ( 2 / 5 ) a + 6 ] = ( 1 / 2 ) ( a + 6 ) 2 ( 2 a + 30 ) = 5 ( a + 6 ) a = 30 e"
Answer: E