A car moves at 80 km/hr in the first half of total time of motion and at 40 km/h–1 in the later half. Its average speed is
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Answered by
2
Let t be the total time.
Distance covered at 80km/hr = 80*t/2
= 40t km
Distance covered at 40km/hr = 40*t/2
= 20t kn
Now,
Average speed = Total Distance/Total time
= (40t + 20t)/t
= 60km/hr ans
Distance covered at 80km/hr = 80*t/2
= 40t km
Distance covered at 40km/hr = 40*t/2
= 20t kn
Now,
Average speed = Total Distance/Total time
= (40t + 20t)/t
= 60km/hr ans
Answered by
4
hello friends
try the formula,
and check the answer
try the formula,
and check the answer
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