Answer:
102 km/hr
Step-by-step explanation:
Formula: [tex]Speed=\frac{distance}{time}[/tex]
The distance = 85 km, and the time elapsed = 50 mins
Speed = 85/50 = 1.7 kilometers a minute
To find out the speed per hour, we multiply by 60
1.7 * 60 = 102
The speed is 102 km/hr
-Chetan K