The limits of trade are those initial cost ratio positions that each nation has at self-sufficiency.
Limit of trade is the maximum price range limit that an security which is traded in the security exchange is allowed to fluctuate in one trading session.
A benefit–cost ratio is an indicator of the benefits as well as the cost which is used in cost–benefit analysis.
It is that ratio which attempts to summarize the overall value for money of a project or proposal.
Every nation will be considered as self sufficient if the cost ratio is zero and there is a fixed limit of trade.
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