A baseball card decreased in value 25% 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 options.
A) 28 %	B) 30 %	C) 32.5 %	D) 36 %	E) 72 %

Rationale: "let the initial value of baseball card = 100 after first year , value of baseball card = ( 1 - 25 / 100 ) * 100 = 75 after second year , value of baseball card = ( 1 - 10 / 100 ) * 75 = 67.5 total percent decrease of the card ' s value over the two years = ( 100 - 67.5 ) / 100 * 100 % = 31.5 % answer c"
Answer: C