400
Tom Brady can mow his lawn in 2 hours. In the same 2 hours, he could film a television commercial and earn $20 000. By contrast, Forrest Gump can mow Brady's lawn in 4 hours, In that same time Gump could work at McDonald's and earn $40. What would Tom Brady have to pay Gump to mow his long so that they are both better off?
What is more than $40 and less than $20 000.