Answer:
n<27
Step-by-step explanation:
Let the unknown number be n
[tex]81 + n > 4 \times n \\ 81 + n > 4n \\ [/tex]
Subtract -n from both sides
[tex]81 + n - n > 4n - n \\ 81 > 3n \\ [/tex]
Divide both sides of the equation by 3
[tex] \frac{81}{3} > \frac{3n}{3} \\ 27 > n[/tex]
