A certain store sells all maps at one price and all books at another price. On Monday the store sold 10 maps and 8 books for a total of $22.00, and on Tuesday the store sold 20 maps and 15 books for a total of $60.00. At this store, how much less does a map sell for than a book?	Pick.
A) $-5.4	B) $0.50	C) $0.75	D) $1.00	E) $l.25
10x+8y=22   20x+15y=60   multiply eq 1 by 2 and eq 2 by 1   20x+16y=44   20x+15y=60   subtracting 1 from 2   y=-16   therefore   x=10.6   difference in price =-5.4   $-5.4
<result>A</result>
A certain store sells all maps at one price and all books at another price. On Monday the store sold 10 maps and 8 books for a total of $22.00, and on Tuesday the store sold 20 maps and 15 books for a total of $60.00. At this store, how much less does a map sell for than a book?