Alfred buys an old scooter for $4700 and spends $600 on its repairs. If he sells the scooter for $5800, his gain percent is?
Choose the correct choice from the following answers:
A) 5.45 % B) 6.23 % C) 7 % D) 9.43 % E) 10 %

Rationale: c . p . = 4700 + 600 = $ 5300 s . p . = $ 5800 gain = 5800 - 5300 = $ 500 gain % = 500 / 5300 * 100 = 9.43 % answer is d
Answer: D