Answer:
See below.
Explanation:
Are you sure it's 4 liters to 250 miles, and not 4 liters to 250 milliliters?
If it is 4 liters to 250 miles, then it equals
0.016 liter : 1 mile
If it is 4 liters to 250 ml, then it is
4 liters : 250 ml
4 liters : 0.25 liter
16 liters : 1 liter
16 : 1