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If a lake has 200 species of fish and 15% are invasive species, how many invasiv

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Question: If a lake has 200 species of fish and 15% are invasive species, how many invasive species are there?

Options:

  1. 25
  2. 30
  3. 35
  4. 40

Correct Answer: 30

Solution: 

15% of 200 is 30, so there are 30 invasive species.

If a lake has 200 species of fish and 15% are invasive species, how many invasiv

Practice Questions

Q1
If a lake has 200 species of fish and 15% are invasive species, how many invasive species are there?
  1. 25
  2. 30
  3. 35
  4. 40

Questions & Step-by-Step Solutions

If a lake has 200 species of fish and 15% are invasive species, how many invasive species are there?
  • Step 1: Understand that 15% means 15 out of every 100.
  • Step 2: Find out how many groups of 100 are in 200. This is 200 divided by 100, which equals 2.
  • Step 3: Since there are 2 groups of 100 in 200, multiply 15 (the percentage) by 2 (the number of groups).
  • Step 4: Calculate 15 times 2, which equals 30.
  • Step 5: Conclude that there are 30 invasive species in the lake.
  • Percentage Calculation – Understanding how to calculate a percentage of a total quantity.
  • Basic Arithmetic – Applying multiplication to find a portion of a number.
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