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

[BTGmoderatorDC]

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

[swerve]

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