The average price of a gallon of gas in North Dakota remained unchanged last week, at $2.85.

That from Gas Buddy dot Com. It surveys 493 gas stations in the state.

The $2.85 price is three cents lower than a month ago, and 35 cents lower than a year ago.

The cheapest station had a price of $2.55, while the most expensive is selling gas for $3.79.

The national average price is $3.12, up four cents from last week.

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