Does anyone know this it sounds simple but there is usually something else to it so I’m not sure.

Answer:
13
Step-by-step explanation:
Because the question asks for the number of hostel rooms with 11 or less guests, we will add the amounts from the three categories that meet this requirement. Lets find the number of rooms for each:
0 - 3 guests: 3 rooms
4 - 7 guests: 5 rooms
8 - 11 guests: 8 rooms
Now, we will add 3, 5 and 8.
3 + 5 + 8 = 16
This means thirteen hostel rooms have 11 of fewer guests.