A tour group has 48 people staying in a hotel. If they all stay on the ground floor of the hotel, there will be not enough rooms for 4 people in each room. If there are 5 people in each room, one room

A tour group has 48 people staying in a hotel. If they all stay on the ground floor of the hotel, there will be not enough rooms for 4 people in each room. If there are 5 people in each room, one room will not be occupied...

The answer is 10.

There are not enough rooms for 4 people in each room; it means there are less than 12 rooms, <12.

To accommodate 5 people in each room, at least 10 rooms are needed, so the answer is 10 or 11, but if there are 5 people in each room, one room is not occupied by 5 people, and only 10 rooms meet the conditions