Alfred buys an old scooter for $4700 and spends $800 on its repairs. If he sells the scooter for $6000, his gain percent is? Options
A) 9.1 %	B) 6.23 %	C) 7 %	D) 8.12 %	E) 10 %

Rationale: "c . p . = 4700 + 800 = $ 5500 s . p . = $ 6000 gain = 6000 - 5500 = $ 500 gain % = 500 / 5500 * 100 = 9.1 % answer is a"
Answer: A