### Home > PC > Chapter 12 > Lesson 12.1.3 > Problem12-29

12-29.

On Team Support Day, the Nobles announce they will give away an extra team poster with every package sold that day.

1. How does this modify the matrix?

In problem 12-24, Packages A and B had no posters, Package C had one poster, and Package D had ten posters. This was represented by $0$, $0$, $1$, $10$ in the fourth column.

2. Suppose that during the day the team sold $40$ Package A’s, $20$ Package B’s, $50$ Package C’s, and $5$ Package D’s. How many tickets did they sell? How many posters?

$\langle 40 \quad 20 \quad 50 \quad 5 \rangle \left[ \begin{array} { c c c c } { 4 } & { 1 } & { 10 } & { 1 } \\ { 6 } & { 1 } & { 15 } & { 1 } \\ { 12 } & { 2 } & { 20 } & { 2 } \\ { 120 } & { 10 } & { 0 } & { 11 } \end{array} \right]$

What part of the resulting matrix represents the total tickets sold? What about the total posters sold?