Survey: Gas prices in US up 5 cents in 2 weeks

A survey says the national average price for gasoline rose 5 cents over the last two weeks. ( AP )

The average price of self-serve regular gasoline on Friday was $3.32 a gallon, mid-grade was $3.44 and premium was $3.55. That's according to the Lundberg Survey of 7,000 stations nationwide released Sunday.

Of the cities surveyed, the cheapest price was in Newark, N.J., where a gallon of regular cost $3.03, on average. The highest was in San Francisco at $3.72.