Answer:
the answer is 3.448275862068966
Step-by-step explanation:
I gallon of water per 1 inch of fish
lemon tetra is 2 inches long
so 1 lemon tetra for 2 gallons of water
20/2 = 10
they can have 10 of them
equation would be X = 20/2
You have to add all the numbers then divide by how many there are, the mean is 3.4