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The cost of a gallon of gas in Massachusetts has crept up by a penny since last week.

    AAA Southern New England reports Monday that self-serve, regular is now selling for an average of $3.52 per gallon.

    That's a penny below the national average and 11 cents lower that at the same time last year, but still 6 cents higher per gallon than a month ago.

    AAA found self-serve, regular selling for as low as $3.41 to as high as $3.69 per gallon.

(Associated Press)