A manâ€™s current age is (2/5) of the age of his father. After 12 years, he will be (1/2) of the age of his father. What is the age of father at now?	Pick:
A) 60
B) 45
C) 38
D) 50
E) 39

Rationale: "let , father â € ™ s current age is a years . then , man â € ™ s current age = [ ( 2 / 5 ) a ] years . therefore , [ ( 2 / 5 ) a + 12 ] = ( 1 / 2 ) ( a + 12 ) 2 ( 2 a + 60 ) = 5 ( a + 12 ) a = 60 a"
Answer: A