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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Important Questions from Average Speed
A person covers a certain distance at the speed of 60 kmph and returns to the starting point at a speed of 40 kmph . Find the average speed (in km/hour) of the person for the whole journey.
A train runs at a speed of 28 kmph for 4 hours and 30 kmph for 5 hours and the remaining 40 kms in one hour. What is the average speed per hour?
Kapil travels for 4.5 hours at a speed of 50 km / h and 7.5 hours at a speed of 70 km / h. At the end of it, he finds that he covered only 6/7 of the total distance. At what average speed should he travel so that the remaining distance traveled in 5 hours?
A car has to cover 125 kms in 5 hours. What will be the average speed of the car if it has covered 90 kms in the first 3 hours?
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