Before a car start moving it's odometer read 5000. After 3h of journey it's odometer read 5450. What is the average speed of the car?
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Odometer reading when the car started = 5000 km
Odometer reading after 3 hours = 5450 km
Distance travelled = 5450 km - 5000 km = 450 km
Time = 3 hours
Speed = Distance ÷ Time = 450 km ÷ 3 hours = 150 km per hour
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