What is the average speed of the car, where half of the distance covered passed at speed 66 km/h and the other half at 86 km/h?

Correct answer:

v =  74.68 km/h

Step-by-step explanation:

t=2v1s+2v2s  v=ts=2v1s+2v2ss  v=v1+v22v1v2 v=66+8626686=74.68 km/h

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