A car moves with a speed of 30 km/h for
half an hour, 25 km/h for one hour and
40 km/h for two hours. Calculate average
speed of the car.
please tell me step by step answer
I will return 20 point
plzzzzz
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Distance covered in half an hour at 30km/hr = s×t = 30×1/2=15km. Distance coveted in 1hr at 25km/hr= s×t= 25×1 =25km. Total time taken= 3hrs and 30 mins=7/2 hrs.
Answered by
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Answer:
Distance covered in half an hour at 30km/hr
=s×t
=30×1/2
=15km
Distance covered in 1hour at 25 km/hr
=s×t
=25×1
=25km
Distance covered in 2 hour at 40km/hr
=s×t
=40×2
=80km
:- Total Distance covered
= 15+25+80
=120 km
Total time taken=3 hours and 30 minutes
=7/2 hours
Therefore
Average Speed× Total Distance
Total time taken
=120×2
7
=34.28 km/ hr
Hope it's helpful.
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