10) Steve and Sally went canoeing on Red River on a day when the current flowed at three miles per hour. They left at 8:30 am and paddled upstream until they reached Elk Island, where they
stopped to have lunch. After an hour and a half, Steve and Sally got back in their canoe and
paddled downstream, returning to their starting point at 5:00 pm. They paddled a total of
twenty-six miles during the day.