A watch was sold at a loss of 10%. If it was sold for Rs.500 more, there would have been a gain of 10%. What is the cost price?
Pick
A) 1000	B) 2998	C) 2500	D) 2788	E) 2991
90%   110%   --------   20% ---- 500   100% ---- ? =&gt; Rs.2500   Answer:2500
<result>C</result>
A watch was sold at a loss of 10%. If it was sold for Rs.500 more, there would have been a gain of 10%. What is the cost price?