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The average number of boys passed per class per class is...

This question belongs to Data Interpretation Bar Chart
Read the following information
Directions (1 - 4): The bar graph shows the results of an annual examination in a secondary school in a certain year. Answer the following four questions based on this chart.
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The average number of boys passed per class per class is:

Answer & Solution
Correct Answer: Option D
Total numbers of boys
= 80 + 40 + 90 + 70 + 70
= 350
∴ Average = $$\frac{350}{5}$$ = 70
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