Sam has limited resources including land, time, fertilizer and seed. He can use these resources to grow squash and beans. The more beans he grows, the less squash he can grow. The more squash he grows, the less bean he can grow. The table indicates some possible combinations that Sam can grow.
Intermediate combinations are also possible.
The only food Sam likes is a stew. The recipe for the stew is two parts beans to one part squash. Suppose instead that Sam has access to a market where squash and beans trade at the rate of one pound of beans for one pound of squash. Verify that Sam's actions is both feasible and optimal. Prepare a brief oral report in which you argue that trade makes Sam better off and improves the efficiency of resource allocations.