By selling 15 pencils for a rupee a man loses 60%. How many for a rupee should he sell in order to gain 60%? Pick one.
A) 2.15 B) 4.2 C) 5.18 D) 3.75 E) 4.2
40% --- 15   160% --- ?     40/160 * 15= 
<gadget id="calculator">  40/160 * 15</gadget>
<output>15/4 = around 3.75</output>
3.75   Answer: 3.75
<result>D</result>
By selling 15 pencils for a rupee a man loses 60%. How many for a rupee should he sell in order to gain 60%?