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60 mph = 1 mile per min therefore 30 mph = 0.5 miles min thus 455mlsx2 = 910 mins or 910mls/60mins = 15hrs 4mins

That is not quite correct and also it is simpler to divide distance by speed (using same units).

455/30 = 15.16666666etc hrs = 15 hrs 10 mins.

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13y ago
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Q: How long would it take to drive 455 miles at 30 mph?
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