The odometer or a car reads 57321.0 km when the clock shows the time 08:30 am.what is the distance moved by the car,if at 08:50 am the odometer reading has changed to 57336.0 km? what is the speed of the car in km/min during this time. express the speed in km/hr also.
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Explanation:
Initial distance = 57321 km
Final distance = 57336 km
Difference = 57336-57321 = 15 km
Starting time = 08:30 am
Ending time = 08:50 am
Difference = 20 mins or 1/3 hr
Speed = Distance ÷ Time
= 15÷1/3
= 45 km/hr
=>15 ÷ 20 = 3/4 km/min
So the speed of the vehicle is 45 km/hr or 3/4 km/min
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