Katrina drinks 10 fluid ounces of water for every 20 minutes of exercise. At this rate, how many fluid ounces of water does Katrina drink for 60 minutes of exercise?
If Katrina drinks 10 fluid ounces of water for every 20 minutes of exercise, for 60 minutes, she drinks 10 fluid ounces/20 minutes * 60 minutes = <<10/20*60=30>>30 fluid ounces. Answer: \boxed{30}.
