A reduction of 10% in the price of oil enables a house wife to obtain 6kgs more for Rs.900, what is the reduced price for kg?	Select the correct option:  A) 13  B) 15  C) 25  D) 17  E) 19
900*(10/100)= 
<gadget id="calculator">900*(10/100)</gadget>
<output>90</output>
90 ---- 6   ? ---- 1=&gt; Rs.15   Answer:15
<result>B</result>
A reduction of 10% in the price of oil enables a house wife to obtain 6kgs more for Rs.900, what is the reduced price for kg?