A reduction of 20% in the price of salt enables a lady to obtain 5 kgs more for Rs.100, find the original price per kg?  Choose one:	A) 6	B) 1	C) 5	D) 4	E) 7
100*(20/100)= 
<gadget id="calculator">100*(20/100)</gadget>
<output>20</output>
20 --- 5   ? --- 1=&gt; Rs.4   100 --- 80   ? ---4 =&gt; Rs.5   Answer: 5
<result>C</result>
A reduction of 20% in the price of salt enables a lady to obtain 5 kgs more for Rs.100, find the original price per kg?