Answer the question using the accompanying cost ratios for two products, fish (F) and chicken (C), in countries Singsong and Harmony. Assume that production occurs under conditions of constant costs and that these are the only two nations in the world. Singsong: 1F = 2C

Harmony: 1F = 4C

Which one of the following would not be feasible terms for trade between Singsong and Harmony?

1 fish for 2½ chicken
1 fish for 3 chicken
1 chicken for 1/5 of a fish
1 chicken for 1/3 of a fish

When cell phones were first entering the market, they were relatively large and reception was undependable. all cell phones were essentially the same. but as the technology developed, many competitors entered, introducing features unique to their phones. today, cell phones are only a small fraction of the size and weight of their predecessors. consumers can buy cell phones with color screens, cameras, internet access, daily planners, or voice activation (and any combination of these features). the history of the cell phone demonstrates what marketing trend?