Mathematics, 02.02.2020 04:44 karla21pilots

Across-country skier reaches the 3-km mark of a race in 15 min and the 12-km mark 45 min later. find the speed of the skier.

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Across-country skier reaches the 3-km mark of a race in 15 min and the 12-km mark 45 min later. find...

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