Question

if the car covers the distance of 150km in 20 seconds, the speed is​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

Your statement doesn't say what speed or speeds the car would be going during the 5 hours. Neither does it say if the 5 hours includes or excludes the 3 hour portion of the trip. It also doesn't mention stops for fuel or other necessities during the 5 hour portion of the trip.

Since the car covers 150 km in the first 3 hours, if it travels at a constant speed, that speed is 50 km/hour. At that same rate, it will cover 250 km during 5 hours. Frankly, it would be quite difficult to travel at a constant speed for either 5 or 8 hours. Especially for an old guy like me!