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The speeds of cars on a road were observed for a certain period. 16 cars were...

The speeds of cars on a road were observed for a certain period. 16 cars were noted to travel at 30kph, 25 cars at 35kph, 21 cars at 40 kph, 18 cars at 45kph, and 20 cars at 50kph. Assuming that each car was traveling at constant speed, determine

1) The time mean speed?
2) The space mean speed?

Engineering   Civil-Engineering   
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