Nobel buys an old car for $1000 and spends $1000 on its repairs. If he sells the scooter for $2500, his gain percent is?
Choose the correct option.
A) 10%  B) 15%  C) 25%  D) 20%  E) 30%
C.P. = 1000+1000= 
<gadget id="calculator">1000+1000</gadget>
<output>2_000</output>
$2000   S.P.= $2500   Gain = 2500-2000= 
<gadget id="calculator">2500-2000</gadget>
<output>500</output>
$500   Gain%= 500/2000 * 100= 
<gadget id="calculator">500/2000 * 100</gadget>
<output>25</output>
25%   Answer is 25%
<result>C</result>
Nobel buys an old car for $1000 and spends $1000 on its repairs. If he sells the scooter for $2500, his gain percent is?