To work this out just divide the distance travelled by the time taken.
In this case the answer is an average speed of 40kph.
60 KPH
Average Speed = distance/time = 240/4 = 60 mph
It travels 288 miles in 4 hours 30 minutes at that speed.
It is: 180/4 = 45 mph
The cars avg speed would be 66 km/ 3 hr which is 22kmh
240/2.5 = 96 kph
38.71 mph
60 KPH
sixty
60km/hour
60 km/hour
240divided by 4 = 60 kph
Difference in distance covered = (240 - 180) = 60 kmBut since speeds differ by 20 kph, difference in distance is (20 x #hours).60 = 20 x #hours#hours = 60/20 = 3 hours.Fast car covers 240 in 3 hours ---> 80 kphSlow car covers 180 in 3 hours ---> 60 kph
The idea is to divide the distance by the time. This will give you the AVERAGE speed for the trip, which may or may not have been the actual speed all the time.
60 kph, which is derived from taking the 240 kilometers it has travelled total and dividing by the four hours it took to traverse said distance.
If a car travels 200 km in 2 hours, it will be traveling at the speed of: 200 km/2 hours = 100 km/h (62 mph)
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