A reduction of 10% in the price of salt enables a lady to obtain 20kgs more for Rs.400, find the original price per kg?
Choices.
A) 2.0 B) 2.8 C) 2.2 D) 2.5 E) 3.0
Answer:	400*(10/100)= 
<gadget id="calculator">400*(10/100)</gadget>
<output>40</output>
40 --- 20   ? --- 1=&gt; Rs.2   400 --- 360   ? --- 2 =&gt; Rs.2.22.Answer: 2.2
<result>C</result>
A reduction of 10% in the price of salt enables a lady to obtain 20kgs more for Rs.400, find the original price per kg?