A baseball card decreased in value 20% in its first year and 20% in its second year. What was the total percent decrease of the card's value over the two years? Select:	A) 28%	B) 30%	C) 32%	D) 36%	E) 72%
consider the initial value of the baseball card as $100   After first year price = 100*0.8= 
<gadget id="calculator">100*0.8</gadget>
<output>80</output>
80   After second year price= 80 *0.8= 
<gadget id="calculator">80 *0.8</gadget>
<output>64</output>
64   final decrease= [(100 - 64)/100] * 100 = 36%   correct answer - 36%(100 - 64)/100  * 100= 
<gadget id="calculator">(100 - 64)/100  * 100</gadget>
<output>36</output>
36%   correct answer - 36%
<result>D</result>
A baseball card decreased in value 20% in its first year and 20% in its second year. What was the total percent decrease of the card's value over the two years?