Answer:
The firm turnover: is 8.1
while the weeks of supply are 6.19
Step-by-step explanation:

​where:

37,000 + 42,500 = 79,500 / 2 = 39,750
Inventory TO 322,000 / 39,750 = 8,100
cost of good sold: 322,000 / 52 = 6,192 inventory sold per week
inventory at hand 42,500
42,500 / 6,192 = 6,86