A movie theater sells popcom and fountain drinks. Brett buys 1 popcorn bucket and 3 fountain drinks for his family, which costs him a total of $27.50. Sarah buys 3 popcorn buckets and 4 fountain drinks for her
family, which costs her a total of $43.75. If p represents the number of popcorn buckets and d represents
(27.50 =p +30
the number of drinks, then the system of equations (43.75 = 3p + 4d can be used to represent this
situation.
Find the cost of a popcorn bucket and the cost of a fountain drink.