# Ex 4.1, 6 (iii) - Chapter 4 Class 7 Simple Equations

Last updated at Sept. 11, 2021 by Teachoo

Last updated at Sept. 11, 2021 by Teachoo

Transcript

Ex 4.1, 6 Set up an equation in the following cases: (iii) The teacher tells the class that the highest marks obtained by a student in her class is twice the lowest marks plus 7. The highest score is 87. (Take the lowest score to be l.) Let lowest score be l Given that, Highest marks is twice lowest marks plus 7. So, Highest marks = 2l + 7 Also, Highest marks = 87 Thus, 87 = 2l + 7 or 2l + 7 = 87

Ex 4.1

Ex 4.1, 1

Ex 4.1, 2 Important

Ex 4.1, 3 (i)

Ex 4.1, 3 (ii)

Ex 4.1, 4 (i) Important

Ex 4.1, 4 (ii)

Ex 4.1, 4 (iii)

Ex 4.1, 4 (iv)

Ex 4.1, 4 (v)

Ex 4.1, 4 (vi)

Ex 4.1, 4 (vii)

Ex 4.1, 4 (viii)

Ex 4.1, 4 (ix)

Ex 4.1, 5 (i) Important

Ex 4.1, 5 (ii)

Ex 4.1, 5 (iii)

Ex 4.1, 5 (iv)

Ex 4.1, 5 (v)

Ex 4.1, 5 (vi)

Ex 4.1, 5 (vii)

Ex 4.1, 5 (viii)

Ex 4.1, 6 (i) Important

Ex 4.1, 6 (ii)

Ex 4.1, 6 (iii) You are here

Ex 4.1, 6 (iv)

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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.