David and Morgan are farmers. Each one owns an 18-acre plot of land. The following table shows the amount of zucchini and watermelon each farmer can produce per year on a given acre. Each farmer chooses whether to devote all acres to producing zucchini or watermelon or to produce zucchini on some of the land and watermelon on the rest.
Zucchini
Watermelon
(Pounds per acre)
(Pounds per acre)
David 12 3
Morgan 18 6