The Business Direct Hotel caters to people who travel for different types of business trips. On Saturday night there
is not a lot of business travel, so the ratio of the number of occupied rooms to the number of unoccupied rooms is
2: 5. However, on Sunday night the ratio of the number of occupied rooms to the number of unoccupied rooms is
6: 1 due to the number of business people attending a large conference in the area. If the Business Direct Hotel has
432 occupied rooms on Sunday night, how many unoccupied rooms does it have on Saturday night?