Question

.25 gallons/1 dollar = ? liters/euro (1 dollar = .84 euros)

Answer 1

We want to convert gallons per dollar into liters per euro.

1 dollar is equivalent to 0.84 euros

3.785 liters is equivalento to 1 gallon

Then,

$\frac{0.25\text{ gallons}}{1\text{ dollar}}\cdot\frac{1\text{ dollar}}{0.84\text{ euro}}\cdot\frac{3.785\text{ liters}}{1\text{ gallon}}=\frac{0.25\cdot3.785}{0.84}\frac{\text{ liter}}{\text{ euro}}=1.12\frac{\text{ liters}}{\text{ euro}}_{}$