Which individual has the comparative advantage in producing potatoes? Explain your answer by calculating the opportunity cost for producing potatoes for both Freya and Calum.

	If 100% of time is spent on the production of one crop	Self sufficiency
	Potatoes (kg)	Oats (kg)	Potatoes (kg)	Oats (kg)
Freya	1000	400	300	250
Calum	800	1000	350	400