A reduction of 20% in the price of salt enables a lady to obtain 2 kgs more for Rs.100, find the original price per kg? Choose the correct option.
A) 12.6	B) 12.1	C) 12.5	D) 12.4	E) 12.7
100*(20/100)= 
<gadget id="calculator">100*(20/100)</gadget>
<output>20</output>
20 --- 2   ? --- 1=&gt; Rs.10   100 --- 80   ? --- 10 =&gt; Rs.12.5   Answer: 12.5
<result>C</result>
A reduction of 20% in the price of salt enables a lady to obtain 2 kgs more for Rs.100, find the original price per kg?