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Example 7 - Chapter 6 Class 11 Linear Inequalities (Term 2)
Last updated at Dec. 8, 2016 by Teachoo
Examples
Example 1
Example 2 Important
Example 3
Example 4 Important
Example 5
Example 6
Example 7 You are here
Example 8 Important
Example 9 Deleted for CBSE Board 2023 Exams
Example 10 Important Deleted for CBSE Board 2023 Exams
Example 11 Important Deleted for CBSE Board 2023 Exams
Example 12 Deleted for CBSE Board 2023 Exams
Example 13 Important Deleted for CBSE Board 2023 Exams
Example 14 Deleted for CBSE Board 2023 Exams
Example 15 Deleted for CBSE Board 2023 Exams
Example 16 Important
Example 17
Example 18 Important
Example 19
Example 20 Important
Chapter 6 Class 11 Linear Inequalities
Serial order wise
- Ex 6.1
- Ex 6.2
- Ex 6.3
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Examples
- Miscellaneous
Transcript
Example 7 The marks obtained by a student of Class XI in first and second terminal examination are 62 and 48, respectively. Find the minimum marks he should get in the annual examination to have an average of at least 60 marks. Marks in first terminal examination = 62 Marks in second terminal examination = 48 Let x be the marks obtained in annual examination Average marks = 62 + 48 + 𝑥3 It is given that Average marks is at least 60 marks, i.e. Average marks ≥ 60 62 + 48 + 𝑥3 ≥ 60 62 + 48 + x ≥ 60 × 3 110 + x ≥ 180 x ≥ 180 – 110 x ≥ 70 Hence minimum marks the student should obtain in the annual test = 70
