It is a hard word problem

Question

on a street with 24 houses 9 houses have fewer than 6 rooms, 8 houses have more than 7 rooms and, and 4 houses have more than 8 rooms. What is the total number of houses on street that are either 6,7 or 8 rooms.

Answer 1

0 < H < 11, somewhere between zero and eleven houses will have 6,7 or 8 rooms

of the 24 houses, 13 could not have 6,7 or 8. The other 11 might have 6,7 or 8 or none of them