Question

A biology class examined some flowers in a local meadow. The students saw 2 perennial flowers and 18 annual flowers. What percentage of the flowers were perennials?

Answer 1

To find the percentage of perennial flowers in the class's examination, we start by determining the total number of flowers.

The total number of flowers is calculated as follows:

\[
\text{Total flowers} = \text{Number of perennials} + \text{Number of annuals} = 2 + 18 = 20
\]

Next, we calculate the percentage of perennial flowers using the formula:

\[
\text{Percentage of perennials} = \left( \frac{\text{Number of perennials}}{\text{Total flowers}} \right) \times 100
\]

Substituting the numbers:

\[
\text{Percentage of perennials} = \left( \frac{2}{20} \right) \times 100
\]

Calculating the fraction:

\[
\frac{2}{20} = 0.1
\]

Now, multiplying by 100 to get the percentage:

\[
0.1 \times 100 = 10
\]

Thus, the percentage of the flowers that were perennials is:

\[
\boxed{10\%}
\]