By selling 24 pencils for a rupee a man loses 20%. How many for a rupee should he sell in order to gain 20%? Select.
A) 8 B) 9 C) 16 D) 6 E) 4
80% --- 24   120% --- ?     80/120 * 24= 
<gadget id="calculator">  80/120 * 24</gadget>
<output>16</output>
16   Answer: 16
<result>C</result>
By selling 24 pencils for a rupee a man loses 20%. How many for a rupee should he sell in order to gain 20%?