某旅店一共70个房间,大房间每间住8个人,小房间每间住6个人,一共480个学生刚好住满,设大房间有 x个,小房间有 y个.下列方程组正确的是( )
x + y = 70 8 x + 6 y = 480
x + y = 7 6 x + 8 y = 480
x + y = 480 6 x + 8 y = 70
x + y = 480 8 x +6 y = 70
试题篮