You pass a road sign saying "New York 112 km." If you drive at a constant speed of 65 mi/h, how long should it take you to reach New York? If your car gets 28 miles to the gallon, how many liters of gasoline are necessary to travel 112 km?

3 answers

This is an exercise in conversions.
a. Convert 112 km to miles, then
distance = rate x time. Substitute distance in miles, rate = 65 mph, solve for time in hours.

b.
Convert 28 miles to km and gallon to liters.
Then km/L x #L = 112 km. Solve for #L.

A. 0.93
B.

1.07 hr