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maeel

On a backpacking trip through Europe, 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?

  • one year ago
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  1. maeel
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    On a backpacking trip through Europe, 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?

    • one year ago
  2. terenzreignz
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    If we let x be how much Troy spent in US dollars, and the ratio between the US dollar and the Swiss franc is 1:2.2, then, it should be proportional to x : 20 1:2.2 :: x:20 Can you do it from here?

    • one year ago
  3. terenzreignz
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    By the way, the proportion could also be written \[\frac{1}{2.2} = \frac{x}{20}\]

    • one year ago
  4. terenzreignz
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    So just find x :)

    • one year ago
  5. maeel
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    Tanya wants to order 50 pizzas for a party. However, the pizza supplier can deliver only 45 pizzas on the given date. How will you describe the relationship between demand and supply of pizzas?

    • one year ago
  6. terenzreignz
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    Relationship between the <something> and the <some other thing> is basically just screaming RATIO! so all you have to do is get what you want the relationship to be about and put them in the form a : b, and reduce it to lowest term as you would a fraction

    • one year ago
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