Jacob worked on a berry farm and stored pints of raspberries in two large freezers. On July 1, the freezer contained 800 pints of raspberries and he added 120 pints of raspberries each week. On the same date, the second freezer contained 1000 pints of raspberries and he added 80 pints of raspberries each week. In how many weeks after July 1 did the two have the same number of pints of raspberries?