Question

Customers at your store select their groceries from shelves and then pay. Sales records and records of restocks for Flaming Roast Coffee (1 lb size) are as follows:

Number of bags Tue Wed Thu Fri Sat Sun Mon


Sales  5  8  2 19 22 15  3


Restock  6 12 12 18 24  0  0


What is the net change in how many bags are on the shelf, from the beginning of Tuesday to the end of Monday?



(Note: A negative number indicates a decrease.)

Answer 1

The net change is -2

Explanation:

No. of bags Tue Wed Thu Fri Sat Sun Mon

Sales 5 8 2 19 22 15 3

Restock 6 12 12 18 24 0 0

Change in bags = Restock - Sales

Change in Tuesday = 6-5 = 1

Change in Wednesday = 12-8 = 4

Change in Thursday = 12-2 = 10

Change in Friday = 18-19 = -1

Change in Saturday = 24-22 = 2

Change in Sunday = 0-15 = -15

Change in Monday = 0-3 = -3

Net change = 1+4+10+(-1)+2+(-15)+(-3)=-2

Hence The net change is -2