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During the first part of a canoe trip, Ken covered 60km at a certain speed. Then he traveled 24km at a speed that was 4km/hour slower.
During the first part of a canoe trip, Ken covered 60km at a certain speed. Then he traveled 24km at a speed that was 4km/hour slower. If the total time for the trip was 8 hours, what was the speed at each part of the trip?