Alice and Bob shared a pizza with equally-sized slices. Alice wanted a plain pizza, but Bob wanted pepperoni on one-third of the pizza. The cost of a plain pizza was dollars, and there was an additional cost of dollars for putting pepperoni on one-third. Bob ate all the slices of pepperoni pizza and two plain slices. Alice ate the remainder. Each paid for what he or she had eaten. How many more dollars did Bob pay than Alice?
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5
