A man sells an article at a profit of 25%. If he had bought it at 20% less and sold it for Rs.16.80 less, he would have gained 30%. Find the cost of the article.	Choose the correct choice from the following options
A) 30	B) 40	C) 50	D) 60	E) 80
Let C.P=100   Gain=25%   S.P=125   Supposed C.P=80   Gain=30%   S.P=(130*80)/100= 
<gadget id="calculator">(130*80)/100</gadget>
<output>104</output>
104   Diff=(125-104)= 
<gadget id="calculator">(125-104)</gadget>
<output>21</output>
21   Diff 21 when C.P=100   then Diff 16.80 when C.P=(100*16.80)/21=50   ANSW80R:80
<result>E</result>
A man sells an article at a profit of 25%. If he had bought it at 20% less and sold it for Rs.16.80 less, he would have gained 30%. Find the cost of the article.