Answer:
Explanation:
Shoes Rye Trade off Ratio (Rye:Shoes )
Portugal 1 3 1:3 or 0.33:1 (1/3 = 0.33)
Sweden 1 11 1:11 or 0.09:1 (1/11= 0.09)
Portugal & Sweden have less opportunity cost & hence comparative advantage than each other, in shoes & rye respectively. Portugal will export shoes to Sweden (importer). Sweden will export rye to Portugal (Importer). Trade will be gainful if they get exchange ratio better than domestic exchange ratio - Portugal gets more than 3 ryes per shoes, Sweden gets more than 1/11 shoes per rye.
'2 ryes per shoes' & '1 rye per shoes' : are not gainful trade ratios for Portugal, as it is getting more i.e 3 ryes per shoes at its own domestic ratio.
'7 ryes per per shoes' is gaining trade ratio for:
'10 ryes per shoes' is gaining trade ratio for: