12 (option C)
Explanation:1 tree requires 2/3 bags of mulch
Let the number of trees for 8 bags of mulch = y
1 tree = 2/3 bags
y = 8 bags
Cross multiply:
8(1) = y(2/3)
[tex]\begin{gathered} 8\text{ = }\frac{2y}{3} \\ Mu\text{ltiply both sides by 3:} \\ 8(3)\text{ = 2y} \\ 24\text{ = 2y} \end{gathered}[/tex][tex]\begin{gathered} \text{Divide both sides by 2:} \\ \frac{24}{2\text{ }}=\frac{2y}{2} \\ y\text{ = 12 } \end{gathered}[/tex]Hence, 8 bags of mulch require 12 trees (option C)
