You can put this solution on YOUR website! what is the speed of a car in cm per second which travels 24km in 8hours?
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= 3 km/hr
3 km = 3000 meters = 300,000 cm
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1 hour = 3600 seconds
300000/3600 = 3000/36
= 1000/12
= 250/3 cm/sec
=~ 83 cm/sec