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Incorrect Change
Posted:
Oct 19, 1998 9:37 PM


A friend of mine gave me the following problem; " You cash you check of x dollars and y cents. You then buy yourself coffee, costing $3.50. However, the waitress gives you the incorrect change of y dollars and x cents." I have attempted to graph the equation but lack the skills to go farther. It was mentioned to me that it could perhaps be done by boolean algrebra, but I have been able to find little more than an encyclopedia entry on this subject.



