A reduction of 20% in the price of oil enables a house wife to obtain 4kgs more for Rs.600, what is the reduced price for kg? Answers
A) 20 B) 40 C) 36 D) 30 E) 35
600*(20/100)= 
<gadget id="calculator">600*(20/100)</gadget>
<output>120</output>
120 ---- 4   ? ---- 1=&gt; Rs.30   Answer:30
<result>D</result>
A reduction of 20% in the price of oil enables a house wife to obtain 4kgs more for Rs.600, what is the reduced price for kg?