Question

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Percent Bar Graphs Quick Check
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Question
Maxwell sorts some marbles by color and creates a percent bar graph to describe the distribution of the data. He finds that 7 marbles are red. If there are 28 marbles in all, how far up will the bar for red go in his bar graph?(1 point)
Responses

up to 25%
up to 25%

up to 7%
up to 7%

up to 20%
up to 20%

up to 50%
up to 50%
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Answer 1

To determine how far up the bar for red will go on the percent bar graph, you need to calculate the percentage of red marbles out of the total number of marbles.

Here's how to calculate it:

1. **Number of red marbles**: 7
2. **Total number of marbles**: 28

Now, use the formula for the percentage:

\[
\text{Percentage of red marbles} = \left( \frac{\text{Number of red marbles}}{\text{Total number of marbles}} \right) \times 100
\]

Substituting in the values:

\[
\text{Percentage of red marbles} = \left( \frac{7}{28} \right) \times 100
\]

Calculating that gives:

\[
\frac{7}{28} = 0.25
\]
\[
0.25 \times 100 = 25\%
\]

Therefore, the bar for red will go up to **25%** on the percent bar graph.

So, the correct response is: **up to 25%**.