# A car travels at a speed of 80 km/h during the first half of its running time and at 40 km/ h during the other half. Find the average speed of the car. (60 km/h)

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by agniParsa274

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by agniParsa274

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Average speed=v1t/2+v2t/2 the whole divided by t/2+t/2

=v1t+v2t/2/t

=v1+v2/2

80+40/2 = 60 km/h