A certain store sells all maps at one price and all books at another price. On Monday the store sold 12 maps and 8 books for a total of $38.00, and on Tuesday the store sold 20 maps and 12 books for a total of $60.00. At this store, how much less does a map sell for than a book?	Choose the correct answer: A) $0.25 B) $0.50 C) $0.75 D) $1.00 E) $l.25
12x+8y=38   20x+12y=60   multiply eq 1 by 5 and eq 2 by 3   60x+40y=38*5   60x+36y=60*3   subtracting 1 from 2   4y=190-180   y=2.5   therefore   x=1.5   difference in price =1   $1.00
<result>D</result>
A certain store sells all maps at one price and all books at another price. On Monday the store sold 12 maps and 8 books for a total of $38.00, and on Tuesday the store sold 20 maps and 12 books for a total of $60.00. At this store, how much less does a map sell for than a book?