025. A car moves with a speed of 30 km hr: for half an hour, 25 km hr for one hour and 40 km hr. for two hours. Calculate
the average speed of the car.
Answers
Answered by
1
Answer:
Total time = 3:30 hrs
Distance = 120km
Average speed = distance/time
120×2/7 = 34(approximately)
Explanation:
Hope clears
Answered by
1
Explanation:
Distance covered in half an hour at 30km/hr =
sxt = 30x1/2=15km.
Distance coveted in Thr at 25km/hr= sxt= 25x1
=25km.
Distance covered in 2 hrs at 40km/hr=sxt=
40x2=80km
Therefore, total distance covered=
15+25+80=120km
Total time taken= 3hrs and 30 mins=7/2 hrs.
Therefore, average speed=total distance
covered/total time taken =120x2/7 = 34.28km/
hr
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