A watch was sold at a loss of 10%. If it was sold for Rs.180 more, there would have been a gain of 5%. What is the cost price?  Choose the correct choice from the following options:
A) Rs.1200
B) Rs. 1100
C) Rs. 1300
D) Rs. 1400
E) Rs. 1000
90%   105%   --------   15% ---- 180   100% ---- ? =&gt; Rs.1200   Rs.1200nswer: Rs.1200
<result>A</result>
A watch was sold at a loss of 10%. If it was sold for Rs.180 more, there would have been a gain of 5%. What is the cost price?