2022 AMC 10A Problems/Problem 4
Problem
In some countries, automobile fuel efficiency is measured in liters per kilometers while other countries use miles per gallon. Suppose that 1 kilometer equals
miles, and
gallon equals
liters. Which of the following gives the fuel efficiency in liters per
kilometers for a car that gets
miles per gallon?
Solution 1
The formula for fuel efficiency is
Note that
mile equals
kilometers. We have
Therefore, the answer is
~MRENTHUSIASM
Solution 2
Since it can be a bit odd to think of "liters per km", this statement's numerical value is equivalent to
km per
liter:
requires
so the numerator is simply
. Since
liters is
gallon, and
miles is
gallon, we have
.
Therefore, the requested expression is
-Benedict T (countmath1)
Video Solution 1 (Quick and Easy)
~Education, the Study of Everything
See Also
2022 AMC 10A (Problems • Answer Key • Resources) | ||
Preceded by Problem 3 |
Followed by Problem 5 | |
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