In a biodiversity study, 200 species were recorded. If 25% were plants, how many

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Question: In a biodiversity study, 200 species were recorded. If 25% were plants, how many were not plants?

Options:

Correct Answer: 150

Solution:

25% of 200 is 50, so 200 - 50 = 150 species are not plants.

In a biodiversity study, 200 species were recorded. If 25% were plants, how many were not plants?

In a biodiversity study, 200 species were recorded. If 25% were plants, how many were not plants?

Step 1: Start with the total number of species recorded, which is 200.
Step 2: Calculate 25% of 200 to find out how many species are plants.
Step 3: To find 25% of 200, multiply 200 by 0.25 (which is the decimal form of 25%).
Step 4: 200 multiplied by 0.25 equals 50. This means there are 50 plant species.
Step 5: To find out how many species are not plants, subtract the number of plant species from the total number of species.
Step 6: So, 200 (total species) minus 50 (plant species) equals 150.
Step 7: Therefore, there are 150 species that are not plants.

Percentage Calculation – Understanding how to calculate a percentage of a total and apply it to find a subset.
Subtraction – Using subtraction to determine the remaining quantity after a portion has been identified.