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? Choose the correct choice from the following:  A) 28%  B) 30%  C) 32%  D) 36%  E) 37%
Let the initial value of baseball card = 100   After first year , value of baseball card = (1- 30/100)* 100= 
<gadget id="calculator">(1- 30/100)* 100</gadget>
<output>70</output>
70   After second year , value of baseball card=(1 - 10/100)* 70= 
<gadget id="calculator">(1 - 10/100)* 70</gadget>
<output>63</output>
63   total percent decrease of the card's value over the two years= (100-63/100 *100%   =37%   Answer 37%
<result>E</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?