Gains From Trade L1 L2 L3 L4 Overall Score: 73% Inventory v PPF V Level 4: Gains from Trade with Absolute ? Now, let's calculate the opportunity cost of gathering firewood for you, and Friday. cals fish Your Opportunity Cost of calories per log Gathering logs wood cals fish Friday's Opportunity Cost of E calories per log Gathering logs wood Check Answer 4000 3000 Fish (cals) 2000Gains From Trade L1 L2 L3 L4 Overall Score: 73% Inventory v PPF V Friday's Opportunity Cost of = calories per log Gathering logs wood Check Answer 4000 3000 Fish (cals) 2000 1000 0 10 20 30 40 50 60 70 80 90 100 110 120 Firewood (logs Your PPF Friday's PPF