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If an automobile averaged 22.5 miles per gallon of gasoline, approximately how many kilometers per liter of gasoline did

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If an automobile averaged 22.5 miles per gallon of gasoline, approximately how many kilometers per liter of gasoline did

by BTGmoderatorDC » Fri May 12, 2023 4:33 pm

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If an automobile averaged 22.5 miles per gallon of gasoline, approximately how many kilometers per liter of gasoline did the automobile average? (1 mile = 1.6 kilometers and 1 gallon = 3.8 liters, both rounded to the nearest tenth.)

A. 3.7
B. 9.5
C. 31.4
D. 53.4
E. 136.8


OA B

Source: Princeton Review
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Re: If an automobile averaged 22.5 miles per gallon of gasoline, approximately how many kilometers per liter of gasoline

by swerve » Sun May 14, 2023 3:06 pm
BTGmoderatorDC wrote: ↑
Fri May 12, 2023 4:33 pm
 If an automobile averaged 22.5 miles per gallon of gasoline, approximately how many kilometers per liter of gasoline did the automobile average? (1 mile = 1.6 kilometers and 1 gallon = 3.8 liters, both rounded to the nearest tenth.)

A. 3.7
B. 9.5
C. 31.4
D. 53.4
E. 136.8


OA B

Source: Princeton Review
Let's try as follow:

\(\dfrac{22.5 \cancel{\text{ mi}}}{1\cancel{\text{ gallon}}} \cdot \dfrac{1.6 \text{ kilometers}}{1 \cancel{\text{ mi}}} \cdot \dfrac{1 \cancel{\text{ gallon}}}{3.8 \text{ liters}}=\dfrac{20 \cdot 2}{4}=10 \text{ kilometers / liter}\)

Therefore, the correct answer is B
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