PORTLAND — Gas prices have gone up 9.1 cents a gallon in the last week in Maine.

Gasoline price-monitoring website GasBuddycom reports Monday that the average cost of a gallon of gas in Maine is up to $2.40, nearly 30 cents per gallon higher than in the past month, but still nearly $1.18 lower per gallon than at this time last year.

The price per gallon in Maine is 2 cents below the national average.

The Maine price is based on a survey of more than 1,200 gas stations.

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