Ex 6.1, 22 - To receive Grade 'A' in a course, one must obtain - Solving inequality - Statement questions

Slide34.JPG

  1. Chapter 6 Class 11 Linear Inequalities
  2. Serial order wise
Ask Download

Transcript

Ex 6.1, 22 To receive Grade A in a course, one must obtain an average of 90 marks or more in five examinations (each of 100 marks). If Sunita s marks in first four examinations are 87, 92, 94 and 95, find minimum marks that Sunita must obtain in fifth examination to get grade A in the course. Marks in 1st examination = 87 Marks in 2nd examination = 92 Marks in 3rd examination = 94 Marks in 4th examination = 95 Let x be the marks obtained by Sunita in the 5th examination Average marks = 87 + 92 + 94 + 95 + 3 It is given that In order to receive grade A in the course, she must obtain an average of 90 marks or more in five examinations. i.e. Average marks 90 87 + 92 + 94 + 95 + 5 90 87 + 92 + 94 + 95 + x 90 5 368 + x 450 x 450 368 x 82 Thus, Sunita must obtain greater than or equal to 82 marks in the fifth examination.

About the Author

Davneet Singh's photo - Teacher, Computer Engineer, Marketer
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.