Answer
Manufacturing facility B has the greatest number of produced Ch items.
Work Step by Step
1. There are two periods, write down given data using two matrices
2. For each period write the data a matrix with 2 rows and 2 columns
3. Matrix for the first period is
[250 300]
[145 75]
4. Matrix for the second period is
[ 275 300 ]
[ 90 120 ]
5. Sum up the matrices
6. The first row represents the number of Ch items.
7. Find greatest number in the first row (540)
