Example 7 - Chapter 6 Class 11 Linear Inequalities
Last updated at Dec. 8, 2016 by Teachoo
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
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Example 7 You are here
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Example 11 Important
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Example 14
Example 15
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Example 17
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Example 19
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Chapter 6 Class 11 Linear Inequalities
Serial order wise
- Ex 6.1
- Ex 6.2
- Ex 6.3
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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.