Answer:
3/8 ft/h
Explanation:
As feet per hour, the rate is ...
(1/8 ft)/(1/3 h) = (3/8) ft/h
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As hours per foot, the rate is ...
(1/3 h)/(1/8 ft) = 8/3 h/ft
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Often, but not always, a "rate" involving time has time in the denominator. Sometimes, we want to use the rate to determine how long a particular task will take. For that purpose, having the rate expressed with time in the numerator is more convenient.