15km/hour
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Speed = Distance / Time = (10 km) / (30 mins) = 0.333 km/minNow what units do you want?km/hr: (30 mins)(1 hr/60 mins) = 0.5 hr so S = (10 km)/(0.5 hr) = 20 km/hr
10km = 10km 11km - 1km = 10km 1000m = 10km 10km/h * 1h = 10km
40/4=10.The object is therefore travelling at 10km per minute. This can also be shown as 0.167km per hour.
10km/h
30km/h = 30km/60min = 5km/10min 20km/h = 20km/60min = 10km/30min 5+10=15km