Answer
Profit = Revenue - Cost
$=\left[\begin{array}{lll}
8,000 & 7,200 & 8,800\\
5,600 & 5,760 & 7,040\\
2,800 & 3,500 & 4,000
\end{array}\right]$
Work Step by Step
Profit = Revenue - Cost
$=\left[\begin{array}{lll}
10000 & 9000 & 11000\\
8000 & 7200 & 8800\\
4000 & 5000 & 6000
\end{array}\right]-\left[\begin{array}{lll}
2000 & 1800 & 2200\\
2400 & 1440 & 1760\\
1200 & 1500 & 2000
\end{array}\right]$
$=\left[\begin{array}{lll}
10000-2000 & 9000-1800 & 11000-2200\\
8000-2400 & 7200-1440 & 8800-1760\\
4000-1200 & 5000-1500 & 6000-2000
\end{array}\right]$
$=\left[\begin{array}{lll}
8,000 & 7,200 & 8,800\\
5,600 & 5,760 & 7,040\\
2,800 & 3,500 & 4,000
\end{array}\right]$
