Level 4: Gains from Trade v olute A Having determined that you should speciance in gathering firewood, find a trade that will make you and Friday better off. Recall that Friday produces 225 calories of fish per hour or 4 logs of firewood per hour and to survive, he needs 40 logs and 450 calories of fish. while you produce 250 calories or 8 logs per hour and to survive you must collect 32 logs and 2000 calories of fish. Collect Wood: 12 hour Collect Fish: 0 hour Daytime Schedule 0 hour 12 hour > Collect Wood Collect Fish Idle Your PPF N