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Mathematics, 02.12.2020 16:00 falgunim4

Toni drives a boat 15 km/h upstream and then turns around and drives 25 km/h back downstream to her starting point. If her total driving time is 4 hours, for how long does she drive upstream? Write and solve an
equation to determine the answer.

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Toni drives a boat 15 km/h upstream and then turns around and drives 25 km/h back downstream to her...
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