Suzanna walked two over seven of a mile in two over five of an hour. What is her unit rate in miles per hour?
Select one:
a. two sevenths over two fifths = one and two fifths miles per hour
b. two fifths over two sevenths = one and two fifths miles per hour
c. two sevenths over two fifths = five over seven mile per hour
d. two fifths over two sevenths = five over seven mile per hour


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