Question

School of Rock
Grade Guitar Bass Drums Keyboard
6th grade 15 17 11 10
7th Grade 20 11 16 18
8th Grade 16 10 19 17

What percent of the 6th graders in the School of Rock play drums? Round your answer to the nearest tenth of a percent.

Answer 1

To find the percentage of 6th graders in the School of Rock who play drums, we can use the following formula:

\[
\text{Percentage} = \left( \frac{\text{Number of students playing drums}}{\text{Total number of students}} \right) \times 100
\]

From the data provided, we have:

- Number of 6th graders playing drums: 11
- Total number of 6th graders: 15 (Guitar) + 17 (Bass) + 11 (Drums) + 10 (Keyboard)

First, let's calculate the total number of 6th graders:

\[
\text{Total 6th graders} = 15 + 17 + 11 + 10 = 53
\]

Now, using the numbers we have:

\[
\text{Percentage of 6th graders playing drums} = \left( \frac{11}{53} \right) \times 100
\]

Calculating the fraction:

\[
\frac{11}{53} \approx 0.2075
\]

Now, multiply by 100 to get the percentage:

\[
0.2075 \times 100 \approx 20.75
\]

Finally, rounding to the nearest tenth of a percent gives us:

\[
20.8\%
\]

Thus, the percentage of 6th graders in the School of Rock who play drums is **20.8%**.