By selling 9 pencils for a rupee a man loses 20%. How many for a rupee should he sell in order to gain 20%?
Choose one
A) 8	B) 9	C) 7	D) 4	E) 6
80% --- 9   120% --- ?     80/120 * 9= 
<gadget id="calculator">  80/120 * 9</gadget>
<output>6</output>
6   Answer: 6
<result>E</result>
By selling 9 pencils for a rupee a man loses 20%. How many for a rupee should he sell in order to gain 20%?