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Question
The bar graph given below shows the marks of students of a class in a particular subject:
Study the bar graph and answer the following questions:
- If 40 is the pass mark, then how many students have failed?
- How many students got marks from 50 to 69?
- How many students scored 90 marks and above?
- If students who scored marks above 80 are given merits then how many merit holders are there?
- What is the strength of the class?
Solution
a. If 40 is the pass marks, then students who got marks less than 40 will be failed.
∴ Number of students who failed = 4
b. Number of students who got marks from 50 to 69
= Number of students who got marks from 50 to 59 + Number of students who got marks from 60 to 69
= 7 + 11
=18
c. Number of students scored 90 marks and above
= Number of students who scored marks 90 to 92
= 4
d. Number of students who scored marks above 80
= Number of students who score 80 to 89 + Number of students who score 90 to 92
= 6 + 4
= 10
Since. students who scored marks above 80 are given merits.
∴ Number of students who are merit holders = 10
e. Strength of the class = Total number of students who scored different marks
= 4 + 2 + 7 + 11 + 8 + 6 + 4
= 42
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