Answer:
0.37 hours (22.2 minutes)
Explanation:
The time taken to cover the distance from Portland to Bangor is given by
[tex]t=\frac{d}{v}[/tex]
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:
[tex]t_1=\frac{215 km}{88.5 km/h}=2.43 h[/tex]
- With the new speed limit (v = 104.6 km/h), the time taken is:
[tex]t_2=\frac{215 km}{104.6 km/h}= 2.06 h[/tex]
So, the time saved is
[tex]\Delta t = t_1 -t_2 = 2.43 h - 2.06 h = 0.37 h[/tex]
And if we want to convert in minutes, we have:
[tex]1 h : 60 min = 0.37 h : x\\x = \frac{0.37 h \cdot 60 min}{1 h}=22.2 min[/tex]
