Questions: The graph below shows two black bars. Adjust the light bar so that it has the mean height of the two black bars.

The graph below shows two black bars. Adjust the light bar so that it has the mean height of the two black bars.
Transcript text: The graph below shows two black bars. Adjust the light bar so that it has the mean height of the two black bars.
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Solution

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Solution Steps

Step 1: Find the height of the first black bar

The first black bar reaches the 6th horizontal line on the graph.

Step 2: Find the height of the second black bar

The second black bar reaches the 9th horizontal line on the graph.

Step 3: Calculate the mean height

The mean height is (6 + 9) / 2 = 7.5

Step 4: Adjust the light bar

The light bar should be adjusted to reach the 7.5 line on the graph, halfway between the 7th and 8th horizontal lines.

Final Answer

The light bar should be extended vertically to a point halfway between the 7th and 8th horizontal lines on the graph.

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