Answer
Find out the how many trees are there on each acre of land .
To prove
Let us assume that the trees are there on each acre of land = x
As given
There are 98,515 tress at Washington Park.
If there are 85 acres of land
the trees spread out evenly i.e the tree are equally divided in each acre of land .
Than the equation becomes
[tex]x = \frac{98515}{85}[/tex]
x = 1159
Therefore are 1159 trees on each acre of land .
Hence proved