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31 December, 11:08

You jog at 9.50 km / h for 8.00 km; then you jump into a car and ride an additional 16.0 km. What average speed must the car have for the average speed for the entire 24.0-km trip to be 24 km/h?

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  1. 31 December, 12:59
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    In this question, you are given the jog velocity (9.5km/h), jog distance (8km), car travel distance (16km) and the average speed of entire trip (24km/h). Then to calculate the speed of the car, the calculation would be:

    24km / (24km/h) = 8km / (9.5km/h) + 16km / car speed

    1h - 0.8421 h = 16km/car speed

    car speed = 16km / 0.158h = 101 km/h
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