Question 10 - Forming Linear Equations - Adding subtracting numbers - Chapter 2 Class 8 Linear Equations in One Variable

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Ex 2.2, 10 - The number of boys and girls in a class are in ratio 7:5

Ex 2.2, 10 - Chapter 2 Class 8 Linear Equations in One Variable - Part 2

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Question 10 The number of boys and girls in a class are in the ratio 7 : 5. The number of boys is 8 more than the number of girls. What is the total class strength?Given that Number of Boy’s and Girl’s in a class are in the ratio 7:5 (π‘π‘’π‘šπ‘π‘’π‘Ÿ π‘œπ‘“ π΅π‘œπ‘¦π‘ )/(π‘π‘’π‘šπ‘π‘’π‘Ÿ π‘œπ‘“ πΊπ‘–π‘Ÿπ‘™π‘ )=7/5 Let the number of boys in the class = 7x & the number of girls in the class = 5x Given that number of boys is 8 more than the number of girls. Number of Boys = Number of Girls + 8 7x = 5x + 8 7x βˆ’ 5x = 8 2x = 8 x = 4 Therefore, Number of Boys = 7x = 7 Γ— 4 = 28 & Number of Girls = 5x = 5 Γ— 4 = 20 Total class strength = Number of boys + Number of Girls = 28 + 20 = 48 Students

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.