By selling 18 pencils for a rupee a man loses 10%. How many for a rupee should he sell in order to gain 35%?
Pick one.
A) 11
B) 13
C) 15
D) 18
E) 12
90% --- 18
135% --- ?
90/135 * 18= 
<gadget id="calculator">90/135 * 18</gadget>
<output>12</output>
12
Answer: 12
<result>E</result>
By selling 18 pencils for a rupee a man loses 10%. How many for a rupee should he sell in order to gain 35%?