Match the time unit
A speed of 60 km/h means 60 kilometres in one hour. At a constant speed, half the time gives half the distance.
30 minutes is 30 ÷ 60 = 1/2 hour. Distance = 60 km/h × 1/2 h = 30 km.
Travel for three quarters of an hour
A vehicle travels at a constant 80 km/h for 45 minutes. Convert first: 45 ÷ 60 = 3/4 hour.
The distance is 80 km/h × 3/4 h = 60 km. Multiplying by 45 directly would treat minutes as hours.
Try a different journey
A vehicle travels at a constant 72 km/h for 20 minutes. Find the distance in kilometres.
Convert 20 minutes into a fraction of one hour, then multiply by the speed.
Try it
At a constant 72 km/h, how far does a vehicle travel in 20 minutes?
- 24 km
- 36 km
Show the answer
24 km
Yes. Convert the minutes to hours: 20 ÷ 60 = 1/3 h. Then 72 km/h × 1/3 h = 24 km.
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