Country W conducts 50% of its trade with country X, 30% of its trade with country Y and 20% of
its trade with country Z. The initial value of the trade-weighted exchange rate of country W is 100.
Country W’s currency appreciates 10% against the currency of country X, depreciates 10%
against the currency of country Y and is unchanged against the currency of country Z.
What will be the new trade-weighted exchange rate?
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