A man sells an article at 15% loss. Had he sold it for Rs. 210/- more he could have gained 20%. What is the cost price of the article?  Pick one
A) Rs.420/-
B) Rs.400/-
C) Rs.600/-
D) Rs.680/-
E) None of these
Explanation:   Short cut method:   Loss =====&gt; 15 %   Profit ====&gt; 20 %   ~   ----------------   35 % ---------&gt; Rs. 210/-   100 % --------&gt; Rs. 600/-   Answer: Option Rs.600/-
<result>C</result>
A man sells an article at 15% loss. Had he sold it for Rs. 210/- more he could have gained 20%. What is the cost price of the article?