1) Gathering the data
1.5 Euros / liter
2) Let's first convert the currency
Since it's in Germany, Foreign per Dollar
1 US$ = 0.9449
3) Converting Metric to Customary unit
1 gallon ----- 3.785 l
y ------------------ 1 l
y= 1/3.785 1 liter = 0.26 gallon
4)
1.5 euros ----------- 1 liter
x 0.26
x =