Matrix multiplication

A company sells three types of tickets: Child, Adult and Senior. The number of tickets sold on a certain day is represented by matrix
$N = \begin{bmatrix} 40 & 25 & 15 \\30 & 20 & 10 \end{bmatrix}$, where the first row is for Morning and the second row is for Evening.

The prices (in dollars) of Child, Adult and Senior tickets are represented by matrix
$P = \begin{bmatrix} 6 & 10 & 8 \end{bmatrix}$.

Using matrix multiplication, find the total amount collected in the Evening.