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If a coral reef ecosystem can support 150 species of fish and 20% of these speci

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Question: If a coral reef ecosystem can support 150 species of fish and 20% of these species are endangered, how many species are endangered?

Options:

  1. 20
  2. 25
  3. 30
  4. 35

Correct Answer: 25

Solution: 

20% of 150 = 0.20 * 150 = 30 species are endangered.

If a coral reef ecosystem can support 150 species of fish and 20% of these speci

Practice Questions

Q1
If a coral reef ecosystem can support 150 species of fish and 20% of these species are endangered, how many species are endangered?
  1. 20
  2. 25
  3. 30
  4. 35

Questions & Step-by-Step Solutions

If a coral reef ecosystem can support 150 species of fish and 20% of these species are endangered, how many species are endangered?
  • Step 1: Identify the total number of fish species in the coral reef ecosystem, which is 150.
  • Step 2: Understand that 20% means 20 out of every 100.
  • Step 3: Calculate 20% of 150 by multiplying 150 by 0.20 (which is the decimal form of 20%).
  • Step 4: Perform the multiplication: 0.20 * 150 = 30.
  • Step 5: Conclude that there are 30 endangered species of fish.
  • Percentage Calculation – Understanding how to calculate a percentage of a total quantity.
  • Basic Arithmetic – Applying multiplication to find the number of endangered species.
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