Mass. gas prices drop 4 cents a gallon, AAA says

The average price for gas in Massachusetts is $3.729 a gallon in the latest weekly AAA survey, down 4 cents from the previous week’s average, AAA Southern New England said Monday.

Prices locally have risen 13 cents over the past month.

The current national average for gas is $3.74 a gallon. A year ago at this time, the Massachusetts average price was $3.73, AAA Southern New England said.

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AAA’s weekly surveys look at prices for self-serve, regular unleaded gas.