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Use the formulla d=rt.find t for r =45.9m/h and d=647.19m.

User HorHAY
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If d = rt, then t = d/r. For us that looks like this:
t= (647.19)/(45.9). The miles label cancels, leaving us with hours and our time is 14.1 hours.
User Carlo Bellettini
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