A reduction of 25% in the price of oil enables a house wife to obtain 5kgs more for Rs.800, what is the reduced price for kg?
Select.
A) 40 B) 60 C) 70 D) 80 E) 20
40   800*(25/100)= 
<gadget id="calculator">800*(25/100)</gadget>
<output>200</output>
200 ---- 5   ? ---- 1=&gt; Rs.40
<result>A</result>
A reduction of 25% in the price of oil enables a house wife to obtain 5kgs more for Rs.800, what is the reduced price for kg?