solve the following problem with explanation , if possible on solver on paper
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METHOD1:
Where V1 and V2 are the velocity of travel of the vehicle.
Vaverage=2V1V2/(V1+V2)
=2×30×50/(30+50)
Vaverage=37.5km/h
METHOD 2:Assume distance is d.
Time to cover d km at 30km/h = d/30 hours.
Time to cover d km at 50km/h = d/50 hours.
Total time = (d/30) + (d/50) = 8d/150 hours.
Average speed = Total distance / Total time
= 2d / (8d/150)
= 300d/8d
= 300/8
= 37.5 km/h
Where V1 and V2 are the velocity of travel of the vehicle.
Vaverage=2V1V2/(V1+V2)
=2×30×50/(30+50)
Vaverage=37.5km/h
METHOD 2:Assume distance is d.
Time to cover d km at 30km/h = d/30 hours.
Time to cover d km at 50km/h = d/50 hours.
Total time = (d/30) + (d/50) = 8d/150 hours.
Average speed = Total distance / Total time
= 2d / (8d/150)
= 300d/8d
= 300/8
= 37.5 km/h
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