by selling 12 pencils for a rupee a man loses 20 %. how many for a rupee should he sell in order to gain 20 %?	Options:
A) 8  B) 76  C) 17  D) 7  E) 77
<gadget id="calculator">100 + 20</gadget>
<output>120</output>

<gadget id="calculator">100 - 20</gadget>
<output>80</output>

<gadget id="calculator">1 / 80</gadget>
<output>1/80 = around 0.0125</output>

<gadget id="calculator">120 * (1/80)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">1 / (3/2)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(2/3) * 12</gadget>
<output>8</output>

<result>A</result>
by selling 12 pencils for a rupee a man loses 20 %. how many for a rupee should he sell in order to gain 20 %?
multiply(divide(const_1, multiply(add(const_100, 20), divide(const_1, subtract(const_100, 20)))), 12)
"80 % - - - 12 120 % - - - ? 80 / 120 * 12 = 8 answer : a"