In Europe, gasoline efficiency is measured in km/L . If your car's gas mileage is 28.0 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=(0.6214mi) and 1gal= (3.78L)

Convert 28.0 mi/gal to km/L. Use the conversion factors shown.

28.0*(1 km/0.6214 mi)*(1 gal/3.78 L) = ?? km/L. Notice how the units you don't want (mi and gal) cancel and leaves the units you want to keep(km and L). You need to go through the calculation but the km/L is about 12.
Then 142 km/12 km/L = ?? Again, you will need to use the correct value instead of 12. Post your work if you get stuck. Check my arithmetic. Check my units.

To solve this problem, we need to convert the car's gas mileage from miles per gallon to kilometers per liter, and then use that to calculate how many liters of gasoline you would need to complete a 142-km trip in Europe.

First, we'll convert the car's gas mileage from miles per gallon to kilometers per liter.

Since we have the conversion factors 1km = 0.6214mi and 1gal = 3.78L, we can use these conversion factors to convert the car's gas mileage.

Gas mileage in kilometers per liter = (Gas mileage in miles per gallon) * (1 km/0.6214 mi) * (1 gal/3.78 L)
Gas mileage in kilometers per liter = 28.0 mi/gal * (1 km/0.6214 mi) * (1 gal/3.78 L)
Gas mileage in kilometers per liter = 45.05 km/L (rounded to two decimal places)

Now that we have the car's gas mileage in kilometers per liter, we can calculate how many liters of gasoline you would need to complete a 142-km trip in Europe.

Liters of gasoline = (Distance of the trip in kilometers) / (Gas mileage in kilometers per liter)
Liters of gasoline = 142 km / 45.05 km/L
Liters of gasoline = 3.15 L (rounded to two decimal places)

Therefore, you would need to buy approximately 3.15 liters of gasoline to complete a 142-km trip in Europe.

While in Europe, if you drive 111km 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 39.0mi/gal ? Assume that 1euro=1.26dollars.

That's correct.

11.9

I responded to the wrong thread lol. If the question was:

"While in Europe, if you drive 101 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 28.0 mi/gal ? Assume that 1euro=1.26dollars."
- then $82.20 would be correct

All of you are wrong. The answer is $82.20

11.9L

15.9 L is the CORRECT ANSWER