A boat traveled downstream a distance of 33 mi and then came right back. if the speed of the current was 12 mph and the total trip took 3 hours nbsp and 40 minutes comma nbsp find the average speed of the boat relative to the water. a boat traveled downstream a distance of 33 mi and then came right back. if the speed of the current was 12 mph and the total trip took 3 hours nbsp and 40 minutes comma nbsp find the average speed of the boat relative to the water.