A. In Europe, gasoline efficiency is measured in km/L. If your car's gas mileage is 38.0 mi/gal, how many liters of gasoline would you need to buy to complete a 142-km trip in Europe? Use the following conversions: 1km = 0.6214 mi and 1 gal = 3.78 L.

B. While in Europe, if you drive 117 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 42.0 mi/gal? Assume that 1 euro=1.26 dollars.