Let us solve for individual vacant boxes.
On Time in 2017
This can be calculated by subtracting the delayed and canceled numbers from the total for the year:
[tex]\Rightarrow3761-598-61=3102[/tex]Total On Time
This can be gotten by adding up all the on time numbers for each year:
[tex]\Rightarrow3102+3197+3237=9536[/tex]Delayed in 2018
This is calculated by subtracting the delayed numbers from 2017 and 2019 from the delayed total:
[tex]\Rightarrow2321-598-877=846[/tex]Canceled in 2019
This is calculated by subtracting the on time and delayed numbers for 2019 from the total in the year:
[tex]\Rightarrow4196-3237-877=82[/tex]Canceled Total
This is gotten by adding up the canceled numbers for all the years:
[tex]\Rightarrow61+68+82=211[/tex]2018 Total
This can be gotten by adding up the on time, delayed, and canceled numbers:
[tex]\Rightarrow3197+846+68=4111[/tex]Total
This can be calculated by adding the totals for the years or for the on time, delayed, or canceled numbers:
[tex]\begin{gathered} \Rightarrow3761+4111+4196=12068 \\ \Rightarrow9536+2321+211=12068 \end{gathered}[/tex]