Answer:
4 hostel rooms
Explanation:
okay so for this all you need to do is read the chart
- go to 4-7 and read across to see how many hostel rooms have this many guests
- go to 20-23 and read across to see how many hostel rooms have this many guests
- there are 5 rooms with 4-7 guests (because 5 is halfway between 4 and 6 on the chart)
- there is only 1 room with 20-23 guests (because 1 is halfway between 0 and 2)
- work out the difference: 5-1 = 4