Answer: The fraction of the total garden space will contain each type of onion = 
Step-by-step explanation:
We have given that, the number of types of onion Vicente wants to plant in his garden = 3
The part of garden he use to plant all of the types of the onions = 
Therefore, the fraction of the total garden space will contain each type of onion = 
Thus, the fraction of the total garden space will contain each type of onion = 
Hence, the fraction of the total garden space will contain each type of onion = 