The profit is the difference between the selling and the purchasing price.
A
a
Purchase Price Matrix:
15 25 30
B
b
Selling Price Matrix:
35 55 85
C
c
Profit on a Shirt: $20 Profit on a Pair of Jeans: $30 Profit on a Pair of Shoes: $55
Practice makes perfect
a
The first column of the table contains the purchase price of the different items.
Item
Purchase Price
Selling Price
Shirts
$15
$35
Jeans
$25
$55
Shoes
$30
$85
We can copy the highlighted numbers, keeping the order, to write a 3* 1 matrix for the purchase price.
15
25
30
b
The second column of the table contains the selling price of the different items.
Item
Purchase Price
Selling Price
shirts
$15
$35
jeans
$25
$55
shoes
$30
$85
We can copy the highlighted numbers, keeping the order, to write a 3* 1 matrix for the selling price.
35
55
85
c
The profit is the difference between the selling and purchase price. We can find this difference for all items in one step by subtracting the purchase price matrix (found in Part A) from the selling price matrix (found in Part B).
