You have to determine the price for each poster, knowing that 4 of them cost $35.80 and that they cost the same. To calculate the price per poster you can divide the total cost by the number of posters purchased:
[tex]\frac{35.80}{4}=8.95[/tex]You can also use the cross multiplication method to determine the price per poster:
4posters → $35.80
1poster → $x
Both expressions have to be at the same proportion so that
[tex]\begin{gathered} \frac{35.80}{4}=\frac{x}{1} \\ x=\frac{35.80}{4} \\ x=8.95 \end{gathered}[/tex]Using either method we arrived at the same conclusion, each poster costs $8.95
