A certain bridge is 4,224 feet long. What constant rate, in miles per hour, must be maintained in order to walk across

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A certain bridge is 4,224 feet long. What constant rate, in miles per hour, must be maintained in order to walk across the bridge in 12 minutes? (1 mile = 5,280 feet)

A. 0.96

B. 1.5

C. 1.6

D. 4.0

E. 5.0

Answer: D

Source: GMAT Prep