Mathematics, 22.10.2020 14:01 lizzie3545
a certain journey took 40 min to complete. if half of the distance was travelled at an average speed of 100 km/h and the other half at an average speed of 60 km/h, what was the total length of the journey
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a certain journey took 40 min to complete. if half of the distance was travelled at an average speed...
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