What is her average speed over the entire trip

Reference no: EM13658221

A person drives a car at a constant speed of 90 km/h along a straight line from point A to point B and then drives back along the line from B to A at a constant speed 110 km/h. What is her average speed over the entire trip? How do I discover the average speed when this question has no information about the distance?

Reference no: EM13658221

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