Bill has a collection of new and used trading cards that he stores in two albums. His first album contains 200 cards, 60% of which are used. If 90% of the cards in his second album are used, and 65% of all of his cards are used, what is the total number of trading cards in Billâ€™s collection?
Choose one.
A) 290  B) 260  C) 240  D) 156  E) 254
(60/100)*200 + (90/100)*B = (65/100)*(200+B)   B = 40   Total cards = 200+B = 240   Answer: 240
<result>C</result>
Bill has a collection of new and used trading cards that he stores in two albums. His first album contains 200 cards, 60% of which are used. If 90% of the cards in his second album are used, and 65% of all of his cards are used, what is the total number of trading cards in Billâ€™s collection?