In the situation above involving in which China sells two rackets to the US for a pair of shoes and between 1 and 9 units, the combined units that the two countries save is 7 units per two rackets and pair of shoes. Alternately, if China produces two rackets and a shoe and then sells rackets to the US (for between 3 and 9 each) the combined units that the two counties save for each two rackets and pair of shoes is 12. | In the situation above involving in which China sells two rackets to the US for a pair of shoes and between 1 and 9 units, the combined units that the two countries save is 7 units per two rackets and pair of shoes. Alternately, if China produces two rackets and a shoe and then sells rackets to the US (for between 3 and 9 each) the combined units that the two counties save for each two rackets and pair of shoes is 12. |