Stickels Puzzle #26

Bob was paddling his canoe upstream at a constant rate. After 6 miles, the wind blew his hat into the stream. Thinking he had no chance to recover his hat, he continued upstream for 6 more miles before turning back. He continued rowing at the same rate on his return trip and overtook his hat at exactly the same spot where he began his journey 8 hours earlier. What was the velocity of the stream? 1/8 mph 1/4 mph 3/8 mph 1/2 mph 5/8 mph 3/4 mph 7/8 mph 1 mph 2 mph None of the above are correct view results