Problem 4: Cases Case 1: Consider at small gas station for 20th century automobiles. It has a single pump that can only be used by one car at a time. Assume that the pump works at the same unit rate for all cars. Case 2: Now consider an electric station exclusively for 21st century automo- biles. It has a single charger that works at some unit rate for a single vehicle but it can be shared among 1"; cars simultaneously. However, in the latter case, each of the 71 car is now only being charged at a smaller rate of 1/11.. For both cases, answer the following questions