Harvey's Espresso Express, a drive-through coffee stop, is famous for its great house coffee, a blend of
Colombian and Mocha Java beans. Their archrival, Jojo's Java, sent a spy to steal their ratio for blending beans.
The spy returned with a torn part of an old receipt that showed only the total number of pounds and the total cost,
18 pounds for $92.07. At first Jojo was angry, but then he realized that he knew the price per pound of each kind
of coffee ($4.89 for Colombian and $5.43 for Mocha Java) Show how he could use equations to figure out how
many pounds of each type of beans Harvey's used.