Uncle Wang's family has harvested 300 kilograms of apples. If each box contains 2 kilograms more, 5 boxes can be saved. How many kilograms of apples are packed in each box?
王伯伯家收获了300千克苹果，如果每箱多装2千克，就可以少用5个箱子．原来每箱装多少千克苹果？
<result>10</result>