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 50% more recliners. What is the percentage increase of the gross? Choose the correct answer
A) 10%
B) 15%
C) 20%
D) 25%
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 50% more ie.,150 recliners   Hence her sales yields 150*80= 
<gadget id="calculator">150*80</gadget>
<output>12_000</output>
$12000   Increase in sales=12000-10000= 
<gadget id="calculator">12000-10000</gadget>
<output>2_000</output>
$2000   So% increase= 2000*100/10000= 
<gadget id="calculator">2000*100/10000</gadget>
<output>20</output>
20%   20% is the answer
<result>C</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 50% more recliners. What is the percentage increase of the gross?