If your car gets 28 miles to the gallon, how many liters of gasoline are necessary to travel 157 km?
157km * 1mi/1.61km * 1gal/28mi * 3.785L/gal = 13.18L
To answer this question, we need to convert both the miles per gallon (mpg) and kilometers (km) into a common unit of measurement, such as liters.
First, let's convert the 28 miles per gallon (mpg) into liters per kilometer (L/km). To do this, we need to know the conversion factor between miles and kilometers, as well as the conversion factor between gallons and liters.
1 mile is approximately equal to 1.609 kilometers, and 1 gallon is equal to approximately 3.785 liters. So, we can calculate the conversion factor from mpg to L/km as follows:
Conversion factor = (miles per gallon) * (1.609 km/mile) / (3.785 L/gallon)
= (28 mpg) * (1.609 km/mile) / (3.785 L/gallon)
= 11.902 L/km
Now, we can use this conversion factor to calculate how many liters of gasoline are necessary to travel 157 km.
Gasoline required (in liters) = (distance traveled in kilometers) * (conversion factor)
= 157 km * (11.902 L/km)
= 1864.814 L
Therefore, approximately 1864.814 liters of gasoline are necessary to travel 157 km in a car that gets 28 miles per gallon.