Answer:
Total number of dogs is 5.
Explanation:
Cups of food each dog gets=

Here,each dog eats two-third cups of dog food.
Amount of dog food used=

A total of three and one-third cups of food is used up.
Let the number of dogs be x.
To find the number of dogs,divide total dog food used by the amount of dog food eaten by each dog.
Hence, x =

x =

x =5