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Given data is Groups 0-10 10-20 20-30 30-40 40-50 Total No of student (f) 3 7 50x80100=40 8 12 10 40 Step 2 i) To find the student have got marks less than 80% The maximum marks are 50 80% of 50 marks is 40 The student has marks less than 40 is=12+8+7+3=30 Student have got marks less than 80% is 30 ii) To find the student have got marks more than 60% The maximum marks are 50 60% of 50 marks is 30 50×60100=30 The student has marks less than 30 is=12+10=22 Student have got marks less than 60% is 22 iii) Student got marks less than 40=12+8+7+3=30

Given data is Groups 0-10 10-20 20-30 30-40 40-50 Total No of student (f) 3 7 50x80100=40 8 12 10 40 Step 2 i) To find the student have got marks less than 80% The maximum marks are 50 80% of 50 marks is 40 The student has marks less than 40 is=12+8+7+3=30 Student have got marks less than 80% is 30 ii) To find the student have got marks more than 60% The maximum marks are 50 60% of 50 marks is 30 50×60100=30 The student has marks less than 30 is=12+10=22 Student have got marks less than 60% is 22 iii) Student got marks less than 40=12+8+7+3=30

Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter2: Equations And Inequalities
Section2.6: Inequalities
Problem 80E
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Given data is Groups 0-10 10-20 20-30 30-40 40-50 Total 50x80100=40 No of student (f) 3 7 8 50×60100=30 12 10 Step 2 i) To find the student have got marks less than 80% The maximum marks are 50 80% of 50 marks is 40 40 The student has marks less than 40 is=12+8+7+3=30 Student have got marks less than 80% is 30 ii) To find the student have got marks more than 60% The maximum marks are 50 60% of 50 marks is 30 The student has marks less than 30 is=12+10=22 Student have got marks less than 60% is 22 iii) Student got marks less than 40=12+8+7+3=30 Student got marks less than 40 is 30
Transcribed Image Text:Given data is Groups 0-10 10-20 20-30 30-40 40-50 Total 50x80100=40 No of student (f) 3 7 8 50×60100=30 12 10 Step 2 i) To find the student have got marks less than 80% The maximum marks are 50 80% of 50 marks is 40 40 The student has marks less than 40 is=12+8+7+3=30 Student have got marks less than 80% is 30 ii) To find the student have got marks more than 60% The maximum marks are 50 60% of 50 marks is 30 The student has marks less than 30 is=12+10=22 Student have got marks less than 60% is 22 iii) Student got marks less than 40=12+8+7+3=30 Student got marks less than 40 is 30
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