In the US we specify how efficiently a car uses gas by citing how many miles per gallon it gets (MPG). In Europe, they cite liters per 100 kilometers (LPK). Note the conversion factors.

1 mi = 1.6 km
1 gal = 3.8 liters

1. Does a more efficient car have a larger or smaller MPG number? Explain how you know.
2. Does a more efficient car have a larger or smaller LPK? Explain how you know.
3. If M is the number of miles per gallon a car gets and L is the number of Liters it takes to go 100 km, find a mathematical equation that lets you convert
   from M to L