Mathematics, 21.07.2019 08:00, sweetbee633

Denise has 5 hours to spend training for an upcoming race. she completes her training by running full speed the distance of the race and walking back the same distance to cool down. if she runs at a speed of 9mph and walks back at a speed of 3mph, how long should she plan to spend walking back?

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Denise has 5 hours to spend training for an upcoming race. she completes her training by running ful...