Answer: There are 7 tetra fish and the total is 28 fishes.
Step-by-step explanation:
Answer:
1:4
Step-by-step explanation:
First we need to find the total number of fish
21 goldfish + 7 tetra fish = total fish
28 fish = total fish
tetra: total
7: 28
We can divide each of these numbers by 7
7/7:28/7
1:4
is the ratio.
