Answer:
[tex]\frac{1}{12} \ gallon[/tex]
Step-by-step explanation:
-Let h denote the amount that each friend receives.
-The fraction, h, of each friend is obtained by dividing the total amount by the number of friends plus herself included:
[tex]h=\frac{Total \ Lemonade}{Tabitha+3 Friends}\\\\=\frac{\frac{1}{3}}{4}\\\\=\frac{1}{3}\times \frac{1}{4}\\\\=\frac{1}{12}\ gallon[/tex]
Hence, each friend gets a twelfth of a gallon([tex]\frac{1}{12}[/tex])