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OpenStudy (anonymous):
Troy spent 20 Swiss francs to stay one night in a youth hostel. If the foreign exchange rate between the U.S. dollar and the Swiss franc is 1:2.2, how much did Troy spend in U.S. dollars?
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OpenStudy (anonymous):
Make a proportion. X 1 - - 20 2.2 Solve for X
OpenStudy (anonymous):
You don't know how to solve proportions do you?
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