What is the difference between comparative advantage and absolute advantage?
Rob has absolute advantage in both picking fruit and catching fish because he picks 100 fruits which is higher than what John can pick(60) and Rob can catch 150 fish which is more than what John can catch(20). But John has a comparative advantage in Fruit picking. He needs to give up just 1 fish to pluck 3 fruits. However, if Rob foregoes catching 1 fish and use the time saved to lpuck fruits, he would not be able to pluck even 1 fruit. On the otherhand Rob has comparative advantage in catching fish. He can catch 15 fish by foregoing plucking 10 fruits. As against this John would need to give up plucking as many as 45 fruits to catch 15 fish. It is because of this, ROB will concentrate on catching fish while John on plucking flowers and tarde among themselves and benefit. This aspect however is beyond the scope of the question. Sorry.