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.
A) 5.45%  B) 6.23%  C) 7%  D) 9.43%  E) 10%
C.P. = 4700+600= 
<gadget id="calculator">4700+600</gadget>
<output>5_300</output>
$5300   S.P.= $5800   Gain = 5800-5300= 
<gadget id="calculator">5800-5300</gadget>
<output>500</output>
$500   Gain%= 500/5300 * 100 = 9.43%   Answer is 9.43%
<result>D</result>
Alfred buys an old scooter for $4700 and spends $600 on its repairs. If he sells the scooter for $5800, his gain percent is?