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I have to make some assumptions here --

I'm going to assume you get an average of 20 miles per gallon, and you will average 50 miles per hour.

13 hours * 50 miles per hour = 650 miles.

650 miles at 20 miles per gallon = 32 gallons.

Your mileage may vary...

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17y ago

What else can I help you with?

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