Mike earns $12per hour and Phil earns $6 per hour. Approximately how much less, as a percentage, does Phil earn than Mike per hour?	Choose the correct choice.
A) 50 % B) 32.5 % C) 37 % D) 37.5 % E) 40 %

Rationale: "what % less of 12 is 6 let it be x % less , then = 12 ( 1 - x / 100 ) = 6 1 - x / 100 = 6 / 12 x = 100 / 2 x = 50 % ans a"
Answer: A