To understand how to use unit conversion to solve problems. Unit conversion is n

Question

To understand how to use unit conversion to solve problems. Unit conversion is not tainted to physics problems but is part of our everyday i e, comet use of conversion factors is essential to working through problems of practical importance. For example, unit conversion could be sued in problems involving currency exchange. Say you want to calculate how many you get if you exchange 3600 US dollars (USD), given the exchange rate I EUR = 1.20 USD, that is, 1 euro to 1.20 US dollars. Begin by writing down the starting value, 3600 USD. This can also be written as a fraction Next, convert dollars; to Euros. This conversion involves multiplying by a simple conversion factor derived from the exchange rate Note that the dollar unit, USD should appear on the bottom of this conversion factor, since USD appears on the top of the starting value. Finally, since dollars are divided by dollars, the units can be and the final result is Currency exchange is only one example of many practical satieties where unit conversion may help you to work through problems Remember that unit conversion involves multiplying a given value by a commissioned factor, rosining in a value in the now units. The conversion factor can be the rate of any two quantities, as king as the ratio is equal to one. Part B How many gallons of final would the rental car consume per mile? Part C what is the average cost, in dollars per gallon, of fuel in Europe?

Explanation / Answer

average fuel cost in Europe is 1.22 euros per ltr.

now 1 ltr=0.264172 gallons

1 euro=1.2 USD
so cost of fuel=1.22*1.2 USD/(0.264172 gallons)

=5.54184 USD/gallons

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