A car travels 80 km at the speed of 20 km/hr and the next 30 km at the speed of 30 km/hr. What is the average speed?
22 km/hr
The correct answer is Option 3 i.e. 22 km/hr.
Time = Distance/Speed
Time taken to travel 80 km = 80/20 = 4 hours
Time taken to travel 30 km = 30/30 = 1 hour
Average speed = (80 + 30)/5 = 110/5 = 22 km/hr
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