2. A car travels from Gondia to Nagpur on a road is 150km
long. If hall the distance is covered at a speed of 60km/h
and the rest is 80km/h. find the average speed of the car.
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Answer:
Answer is 68.57km
Explanation:
time taken in 1st half=75/60= 5/4 hr
time taken in another half=75/80=15/16hr
total time =5/4+15/16=35/16hr
average speed=total distance/total time
=150/35/16=(150*16)/35=30*16/7=480/7=68.57km/ hr
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