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If a marine ecosystem has a fish population of 5000 and 20% of them are predator

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Question: If a marine ecosystem has a fish population of 5000 and 20% of them are predators, how many predator fish are there?

Options:

  1. 800
  2. 900
  3. 1000
  4. 1100

Correct Answer: 1000

Solution: 

5000 * 0.20 = 1000 predator fish.

If a marine ecosystem has a fish population of 5000 and 20% of them are predator

Practice Questions

Q1
If a marine ecosystem has a fish population of 5000 and 20% of them are predators, how many predator fish are there?
  1. 800
  2. 900
  3. 1000
  4. 1100

Questions & Step-by-Step Solutions

If a marine ecosystem has a fish population of 5000 and 20% of them are predators, how many predator fish are there?
  • Step 1: Identify the total number of fish in the marine ecosystem, which is 5000.
  • Step 2: Determine the percentage of fish that are predators, which is 20%.
  • Step 3: Convert the percentage into a decimal by dividing by 100. So, 20% becomes 0.20.
  • Step 4: Multiply the total number of fish (5000) by the decimal (0.20) to find the number of predator fish.
  • Step 5: Calculate 5000 * 0.20, which equals 1000.
  • Percentage Calculation – Understanding how to calculate a percentage of a total quantity.
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