The number 0.8 is how much greater than 1/2 ?  Choose the correct choice from the following answers:
A) ½
B) 3 / 10
C) 1 / 50
D) 1 / 500
E) 2 / 500

Rationale: "let x be the difference then . 8 - 1 / 2 = x 8 / 10 - 1 / 2 = x x = 3 / 10 ans b"
Answer: B