By selling 18 pencils for a rupee a man loses 20%. How many for a rupee should he sell in order to gain 20%?	Choose the most appropriate option:  A) 8  B) 12  C) 6  D) 4  E) 9
80% --- 18   120% --- ?     80/120 * 18= 
<gadget id="calculator">  80/120 * 18</gadget>
<output>12</output>
12   Answer:12
<result>B</result>
By selling 18 pencils for a rupee a man loses 20%. How many for a rupee should he sell in order to gain 20%?