If the US exchange 6 bushel of wheat (6w) for 6 yeard of British
cloth (6), the US gain 2c or savel1/2 man- hour or 30 minute of labor
time. For the UK, 6w receives from
the US is equivalent to 6 man-hours of labor time to product if.
By exchange (6c) fro 6w with the US the UK gains 24c or saves almost 5 man-hours.
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