16 km was he averaging per hour.
Average speed is calculated by dividing the total distance that something has traveled by the total amount of time it took it to travel that distance.
Using Formula,
average speed= distance/ time taken
distance = 120 km
time= 7.5 hours
Average speed= 120/7.5
Average speed= 16 Km/h= 4.44m/s
Learn more about average speed here:
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