Answer:
The answer to your question is: 28 km / h
Step-by-step explanation:
Data
distance = 8.4 km
time = 18 min
speed = ? km/h
Process
Convert min to hours
60 min ---------------- 1 h
18 min ---------------- x
x = (18 x 1) / 60
x = 0.3 h
speed = 8.4 / 0.3
speed = 28 km / h
