Mathematics, 14.07.2019 01:00 ochoachanna

Alvin wants to know what his average paddling rate was for a canoe trip to a campsite. on the way there it took him 7 hours against a river current of 4 km/ hr. on the way back, the same distance took him 5 hours with the same 4 km/hr current. let r = alvin's average paddling rate.

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Alvin wants to know what his average paddling rate was for a canoe trip to a campsite. on the way th...