Number of trees on [tex] \frac{1}{4} [/tex] of the land Joe owns = 250 trees
Total Number of trees on the whole land Joe owns = [tex] 250 \times 4 [/tex]
= 1000 trees
Area of land covered with 10 trees = 1000
Area of land covered with 1 tree = [tex] \frac{1000}{10} [/tex]
= 100 square feet
Therefore, Total land covered with 1000 trees = 1000 [tex] \times [/tex] 100
= 100,000 square feet
Since 1 acre = 43560 square feet
So, Total acres of land owned by Joe = [tex] \frac{100000}{43560} [/tex]
= 2.29 acre
= 2.3 acre
So, Joe owns 2.3 acres of land.