Chapter 6.5, Problem 52E

(a)

To determine

To calculate: The matrix product NW for the matrix:

$W=\left[\begin{array}{c}34\\ 61\\ 51\end{array}\right]$ and

$N=\left[\begin{array}{rrr}\hfill 25& \hfill 60& \hfill 40\\ \hfill 5& \hfill 12& \hfill 10\end{array}\right]$

(b)

To determine

Meaning of $NW=\left[\begin{array}{r}\hfill 6550\\ \hfill 1412\end{array}\right]$.

(c)

To determine

Net cost of teacher wages in city and country school also mention cost for entire school district.