Joe walked four over nine of a mile in four over five of an hour. What is his unit rate in miles per hour?
(1 point)
Group of answer choices
four ninths over four fifths = five over nine mile per hour
four fifths over four ninths = one and four fifths miles per hour
four ninths over four fifths = 'one and four fifths miles per hour
four fifths over four ninths = five over nine mile per hour