or
The employee at the department store counted the number of ties on each tie rack.

1-5
6-10
11-15
16-20
21-25
26-30
31-35
36-40
0
1
2
3
4
5
6
7
8
9
Number of racks
Number of ties
Ties per rack


How many racks have between 36 and 40 ties?

racks
ref_doc_title.

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