If 40% of a number is greater than 80% of 5 by 2, what is the number?
Select: A) 3 B) 15 C) 20 D) 2 E) 5

Rationale: "explanation : 40 / 100 * x - 80 / 100 * 5 = 2 40 / 100 * x - 4 = 2 40 / 100 * x = 6 x = 6 * 100 / 40 x = 15 answer : option b"
Answer: B