Final answer:
The trucker's average speed was calculated to be 79.5 mph which is above the posted speed limit of 65 mph, hence the trucker was rightfully cited for speeding.
Step-by-step explanation:
The trucker was cited for speeding because the distance covered and the time taken to cover that distance imply that the trucker was driving faster than the posted speed limit. To determine if the trucker was speeding, one would perform a basic calculation of speed which is distance divided by time. The trucker covered a distance of 159 miles in 2 hours, which would give us an average speed calculation as follows:
Speed = Distance / Time = 159 miles / 2 hours = 79.5 mph
This average speed is significantly higher than the posted speed limit of 65 mph, and therefore, the trucker was rightfully cited for exceeding the speed limit.