Practice!

Sample Problem

A company makes staplers that come in three different colors: black, blue, and red and two different styles: standard and portable. Below are two tables summarizing the total sales of the company between last month and this month:

Standard:

 

Black

Blue

Red

Last month

staplers

114

115

87

This month

staplers

98

123

101

 Portable:

 

Black

Blue

Red

Last month

staplers

124

143

108

This month

staplers

136

125

126

 

Write two matrixes to represent the sales of last month and the sales of this month. Then, use these matrixes to find the average sales for each color and type of stapler in the 2-month period.

Averages:

Standard black staplers  

Standard blue staplers 

Standard red staplers

Portable black staplers 

Portable blue staplers 

Portable red staplers 

Solution

The two matrices are:

Last month staplers:

Stan Port

Stan Port

To find the average sales for each color and type of stapler in the 2-month period.