Mathematics, 11.04.2020 19:01, kholman

During the first two hours of a 4-h trip, the force of the wind causes a sailboat to travel 68 km. During the next two hours, the wind speed changes. The boat sails 3 km in the next hour and 25 km in the last hour. What was the boat's AVERAGE speed?

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During the first two hours of a 4-h trip, the force of the wind causes a sailboat to travel 68 km. D...