By selling 33 metres of wire, a shopkeeper gains the price of 11 metres of wire. His gain per cent is	Choose the correct choice.
A) 7%  B) 50%  C) 20%  D) 22%  E) 32%
Suppose S.P of 33 meters of cloth = Rs 33   Therefore, Gain = Rs 11 =&gt; C.P = Rs 22   Gain % = 11/22 x 100 = 50%   Gain = 50%   ANSWER:50%
<result>B</result>
By selling 33 metres of wire, a shopkeeper gains the price of 11 metres of wire. His gain per cent is