AAA: Mass. gas prices fall 6 cents a gallon

The average price for gas in Massachusetts was $3.769 a gallon in the latest weekly AAA survey, down 6 cents from the previous week’s average, AAA Southern New England said Monday. Over the last three weeks, the average has fallen 13 cents a gallon. The current national average for gas is $3.77 a gallon. A year ago at this time, the Massachusetts average price was $3.94 a gallon.