For many years, the posted highway speed limit was 88.5 km/hr (55 mi/hr) but in recent years some rural stretches of highway have increased their speed limit to 104.6 km/hr (65 mi/hr). in maine, the distance from portland to bangor is 215 km. how much time can be saved in making this trip at the new speed limit?

0.37 hours (22.2 minutes)

Explanation:

The time taken to cover the distance from Portland to Bangor is given by

where

d = 215 km is the distance

v is the speed

- With the old speed limit (v = 88.5 km/h), the time taken was:

- With the new speed limit (v = 104.6 km/h), the time taken is:

So, the time saved is

And if we want to convert in minutes, we have: