A reduction of 25% in the price of oil enables a house wife to obtain 5kgs more for Rs.900, what is the reduced price for kg?  Select the correct option.
A) 45 B) 60 C) 70 D) 80 E) 20
45   900*(25/100)= 
<gadget id="calculator">900*(25/100)</gadget>
<output>225</output>
225 ---- 5   ? ---- 1=&gt; Rs.45
<result>A</result>
A reduction of 25% in the price of oil enables a house wife to obtain 5kgs more for Rs.900, what is the reduced price for kg?