Answer: There are 7 tetra fish and the total is 28 fishes.
Explanation:
Answer:
1:4
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
is the ratio.
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