Answer:
6.3 trees.
Step-by-step explanation:
We have been given that Meryl needs to cut down 10.5 trees for every 5 cabins she builds.
Let us find the number of trees Meryl needs to cut down to build 1 cabin by dividing 10.5 by 5.
[tex]\text{Number of tress needed to build 1 cabin}=\frac{10.5}{5}[/tex]
[tex]\text{Number of tress needed to build 1 cabin}=2.1[/tex]
Now let us multiply 2.1 by 3 to find the number of trees Meryl needs to cut down to build 3 cabins.
[tex]\text{Number of tress needed to build 3 cabins}=2.1\times 3[/tex]
[tex]\text{Number of tress needed to build 3 cabins}=6.3[/tex]
Therefore, Meryl needs to cut down 6.3 trees, if she builds 3 cabins.
