A baseball card decreased in value 30% in its first year and 10% in its second year. What was the total percent decrease of the card's value over the two years?	Answers
A) 28%	B) 37%	C) 32%	D) 36%	E) 72%
consider the initial value of the baseball card as $100   After first year price = 100*0.7= 
<gadget id="calculator">100*0.7</gadget>
<output>70</output>
70   After second year price= 70 *0.9= 
<gadget id="calculator">70 *0.9</gadget>
<output>63</output>
63   final decrease= [(100 - 63)/100] * 100 = 37%   correct answer - 37%(100 - 63)/100  * 100= 
<gadget id="calculator">(100 - 63)/100  * 100</gadget>
<output>37</output>
37%   correct answer - 37%
<result>B</result>
A baseball card decreased in value 30% in its first year and 10% in its second year. What was the total percent decrease of the card's value over the two years?