Suppose two? utilities, People's Electric and Municipal? Energy, each produce 200200 tons of pollution per year. The government has a goal of eliminating half the ?pollution, and, in? turn, provides 100100 pollution permits to each utility. A pollution permit is required to legally produce a ton of pollution. ? However, the two utilities are allowed to trade permits. Suppose the cost of eliminating one ton of pollution for? People's Electric is $400400 and the cost of eliminating a ton of pollution for Municipal Energy is ?$450450.The total cost of each utility eliminating 100 tons of pollution is $___?