Melissa's tractor-trailer gets 5 miles per gallon. Approximately what is this in liters per 100 kilometers?

Question

Quizplus · Accepted Answer

To convert from miles per gallon to liters per 100 kilometers, we need to use the following conversion:
1 mile per gallon = 0.425 kilometers per liter
We can then use unit analysis to convert:
5 miles per gallon = 5 (miles/gallon) x 0.425 (kilometers/liter) = 2.125 kilometers per liter
To convert to liters per 100 kilometers, we invert and multiply:
100 kilometers / 2.125 kilometers per liter = 47.06 liters per 100 kilometers (rounded to 2 decimal places)
Therefore, the best choice is B.

Melissa's Tractor-Trailer Gets 5 Miles Per Gallon