The cost price of a radio is Rs.2400 and it was sold for Rs.2100, find the loss %?	Pick one:
A) 12.5%  B) 11%  C) 13%  D) 15%  E) 12.8%
2400 ---- 300   100 ---- ? =&gt; 12.5%   12.5%nswer:12.5%
<result>A</result>
The cost price of a radio is Rs.2400 and it was sold for Rs.2100, find the loss %?