On the Saturday morning, the inventory will be -18
Calculation of the inventory
From the table given above the inventory of the next day is gotten from the difference between the present day inventory and the changes noticed.
For example, the inventory on Thursday is gotten by subtraction of the noticed change for the day.
Therefore, on the Saturday morning, the inventory will be 2 - 20 = -18
The difference between the greatest inventory which is 18 and least inventory which is -18 is = 0.
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