A man sells an article at 15% loss. Had he sold it for Rs. 140/- more he could have gained 20%. What is the cost price of the article? Choose the correct choice from the following:
A) Rs.420/-
B) Rs.400/-
C) Rs.460/-
D) Rs.480/-
E) None of these
Explanation:   Short cut method:   Loss =====&gt; 15 %   Profit ====&gt; 20 %   ~   ----------------   35 % ---------&gt; Rs. 140/-   100 % --------&gt; Rs. 400/-   Answer: Option Rs.400/-
<result>B</result>
A man sells an article at 15% loss. Had he sold it for Rs. 140/- more he could have gained 20%. What is the cost price of the article?