Answer:
Train A's unit rate is 67 km per hour.
Train B's unit rate is 75 km per hour.
Train B is faster than Train A
Step-by-step explanation:
Train A
Distance traveled by Train A is represented by :
![d=67t](https://tex.z-dn.net/?f=d%3D67t)
where
represents distance traveled in kilometers and
is the time in hours.
To find the unit rate of Train A, we will plugin
and get the distance traveled by Train A in 1 hour which will be the unit rate of Train A in km/hr.
![d=67(1)](https://tex.z-dn.net/?f=d%3D67%281%29)
![d=67](https://tex.z-dn.net/?f=d%3D67)
So, distance traveled by Train A in 1 hour = 67 km
∴ Train A's unit rate is 67 km per hour.
Train B
For Train B, we are given the table for the time in hours and distance traveled in that duration.
Taking time =2 hours the distance traveled by Train B= 75 km
To find distance traveled in 1 hour we apply unitary method.
![2\ hr = 150\ km](https://tex.z-dn.net/?f=2%5C%20hr%20%3D%20150%5C%20km)
So ![1\ hr = \frac{150}{2}\ km = 75\ km](https://tex.z-dn.net/?f=1%5C%20hr%20%3D%20%5Cfrac%7B150%7D%7B2%7D%5C%20km%20%3D%2075%5C%20km)
So, distance traveled by Train B in 1 hour = 75 km
∴ Train B's unit rate is 75 km per hour.
Difference in units rates = ![75-67=8\ km/hr](https://tex.z-dn.net/?f=75-67%3D8%5C%20km%2Fhr)
On comparing their unit rate i.e. the speed of the trains we find out that Train B is faster than Train A by 8 km/hr