The cost price of a radio is Rs.2300 and it was sold for Rs.1800, find the loss %?  Choose the correct choice from the following:
A) 18
B) 99
C) 27
D) 26
E) 21
2300 ---- 500   100 ---- ? =&gt; 21%   Answer: 21
<result>E</result>
The cost price of a radio is Rs.2300 and it was sold for Rs.1800, find the loss %?