Students in a health class are tracking how much water they consume each day. Brandon has two reusable water bottles: a small one and a large one. Yesterday, he drank 2 small bottles and 4 large bottles, for a total of 3,060 grams. The day before, he drank 2 small bottles and 2 large bottles, for a total of 1,962 grams. How much does each bottle hold?