A furniture store owner decided to drop the price of her recliners by 20% to spur business. By the end of the week she had sold 70% more recliners. What is the percentage increase of the gross?  Pick one:  A) 10%  B) 15%  C) 20%  D) 36%  E) 50%
Say a recliner is actually worth $100   If she sells 100 recliners then she earns $10000   After the discount of 20%, she will earn $80 per recliner and she sells 70% more ie.,170 recliners   Hence her sales tields 170*80= 
<gadget id="calculator">170*80</gadget>
<output>13_600</output>
$13600   Increase in sales=13600-10000= 
<gadget id="calculator">13600-10000</gadget>
<output>3_600</output>
$3600   So% increase= 3600*100/10000= 
<gadget id="calculator">3600*100/10000</gadget>
<output>36</output>
36%   36% is the answer
<result>D</result>
A furniture store owner decided to drop the price of her recliners by 20% to spur business. By the end of the week she had sold 70% more recliners. What is the percentage increase of the gross?