It is 6:45 on Friday evening at the Y;all Come Restaurant. Winnie the waitress approaches the table where the four Martins are studying their menus. Over in the corner, Conrad is reading the comics. One customer gets up to leave. It's Bill who pays his bill with a $10.00 bill, and receives a dollar bil in change. The daily special is beef stew. Yoou can buy a hotdog for 2.98. What's the rpice of a hamburger and milk shake?

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