We know that 16 cups are in 1 gallon
We also know that 10 servings = 2 cups
Now that means 80 servings = 1 gallon
That means we need 320 / 80=4
It is A 4 gallons 
Hope this helps
        
                    
             
        
        
        
Answer:
30
Step-by-step explanation:
because 6 × 5 equals 30 and when you're looking for when something's going to be the same you got to do what your numbers are times each other 
 
        
             
        
        
        
Answer:
22.5 km
Step-by-step explanation:
divide 30 by 4 times it by 3
 
        
             
        
        
        
Answer:
First option is correct answer. 
Step-by-step explanation:
Area = 4x - 10
Perimeter = x + 8