A car travel at aspeed of 80km/hr during the first half of its running time and at 40km/hr during the other half .Find the average speed of the car
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Answered by
7
heya friend!!☺
here's your answer!!☺
Let total distance be 2x
Half distance=x
Time=Distance/Speed
Time for one half of journey=x/80
Time for other half of journey=x/40
Avg speed=Total distance/Total Time
=2x/((x/80)+(x/40))
=2x/((x+2x)/80
=2x/(3x/80)
=2x×80/3x
=160x/3x
=53.3 km/h
Plz mark as brainliest :D
hope it helps you!!☺☺
here's your answer!!☺
Let total distance be 2x
Half distance=x
Time=Distance/Speed
Time for one half of journey=x/80
Time for other half of journey=x/40
Avg speed=Total distance/Total Time
=2x/((x/80)+(x/40))
=2x/((x+2x)/80
=2x/(3x/80)
=2x×80/3x
=160x/3x
=53.3 km/h
Plz mark as brainliest :D
hope it helps you!!☺☺
Answered by
3
hope it will help you
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