Mathematics, 26.12.2019 19:31 HistoryLee

Traveling with the wind, jerry takes 10 minutes to bicycle to a local library 2.5 km away. coming back against the wind, it takes him 15 minutes. what is jerry's bicycling speed in still air?

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Traveling with the wind, jerry takes 10 minutes to bicycle to a local library 2.5 km away. coming ba...