A car making a 106-km journey travels 39 km/h for the first 53 km. How fast must it go during the second 53 km to average 47 km/h?
Find the speed for the next 53 km journey.
Total distance travelled is 106 km.
The speed of the car for the first 53 km of the journey is 39 km/h.
The average speed of the car is 47 km/h.
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