Question: A golfer rides in a golf cart at an average speed of 3.10 m/s for 28.0 s. She then gets out of the cart and

A golfer rides in a golf cart at an average speed of 3.10 m/s for 28.0 s. She then gets out of the cart and starts walking at an average speed of 1.30 m/s. For how long (in seconds) must she walk if her average speed for the entire trip, riding and walking, is 1.80 m/s?

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