Ajet boat is used to take canoers 200 miles upriver to their starting point. as the driver of the jet boat, jeremy knows that it will take him 5 hours to get the canoers upstream, but only 4 hours to get the boat back downstream after dropping the canoers off, as long as he keeps the boat moving at a constant speed. how fast would the boat be moving in still water? a. 5 mph b. 40 mph c. 45 mph d. 50 mph