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The following bar graph shows the results of an annual examination in a secondary school.

The class having the lowest pass rate of students is:

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VI, IX

VII, VIII

X, VII

IX, VIII

answer is B.

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Detailed Solution

Given a bar graph about results of an annual examination in a secondary school.
Question Image

Obtain a structured data chart based on the bar graph, Question Image

So, from the graph and the chart,
Passing rate of class students

=

Percentage of boys

+

Percentage of girls
Passing rate of class

V I

students

= 80 + 70

= 150

Passing rate of class

V I I

students

= 40 + 100

= 140
Passing rate of class

V I I I

students

= 90 + 50

= 140

Passing rate of class

I X

students

= 80 + 70

= 150

Passing rate of class

X

students

= 90 + 70

= 160

Class VII and VIII has the lowest passing rate.
Hence, option 2) is correct.

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The following bar graph shows the results of an annual examination in a secondary school.The class having the lowest pass rate of students is:

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The following bar graph shows the results of an annual examination in a secondary school.

The class having the lowest pass rate of students is: