Respuesta :
Answer: [tex]\frac{17}{30}[/tex]
Step-by-step explanation:
First, you calculate how many gallons of fruit punch you had initially, by adding the gallons of grape juice and orange juice:
[tex]\frac{1}{2}+\frac{2}{5}=\frac{5+4}{10}=\frac{9}{10}\\[/tex]
Then you subtract the fruit punch that the guests drank:
[tex]\frac{9}{10}-\frac{1}{3}=\frac{27-10}{30}=\frac{17}{30}[/tex]
So, you have 17/30 of a gallon of fruit punch left.