Firm A currently dumps 223 tons of chemicals into the local river. Firm B currently dumps 192 tons of chemicals into the local river. The government has decided to reduce the pollution and from now on...

Firm A currently dumps 223 tons of chemicals into the local river. Firm B currently dumps 192 tons of chemicals into the local river. The government has decided to reduce the pollution and from now on will require a pollution permit for each ton of pollution dumped into the river. The government gives each firm 10 pollution permits. The abatement costs of one ton of pollution is $173 for Firm A and $76 for Firm B. What would be the total cost of reducing pollution, if the firms are allowed to trade permits between each other?