Answer:
To calculate the fish population in 2020, we need to first find the fish population in 2018, 2019, and then use that to find the population in 2020.
In 2018, the fish population would be:
36,000 - (10% of 36,000) = 36,000 - 3,600 = 32,400
In 2019, the fish population would be:
32,400 - (10% of 32,400) = 32,400 - 3,240 = 29,160
Finally, to find the fish population in 2020, we can repeat the same process:
29,160 - (10% of 29,160) = 29,160 - 2,916 = 26,244
Therefore, the fish population in 2020 was approximately 26,244.
Explanation: