Mathematics, 09.02.2021 06:00, rleiphart1

9. Tina hiked 15 km up a mountain trail. Her return trip along the
same trail took 30 min less
because she was able to increase
her speed by 1 km/h. How long
did it take her to climb up and
down the mountain?

Answers: 3

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9. Tina hiked 15 km up a mountain trail. Her return trip along the
same trail took 30 min les...