Ex 4.4, 2 - Chapter 4 Class 7 Simple Equations - Part 5

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Ex 4.4, 2 - Chapter 4 Class 7 Simple Equations - Part 6

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  1. Chapter 4 Class 7 Simple Equations
  2. Serial order wise

Transcript

Ex 4.4, 2 (b) In an isosceles triangle, the base angles are equal. The vertex angle is 40°. What are the base angles of the triangle? (Remember, the sum of three angles of a triangle is Ex 4.4, 2 (c) Sachin scored twice as many runs as Rahul. Together, their runs fell two short of a double century. How many runs did each one score?Let, Rahul scored = x runs Given that, Sachin’s runs = twice Rahul’s runs Sachin’s runs = 2x Also, Total runs of Sachin & Rahul = 2 short of double century So, x + 2x = 200 − 2 3x = 198 x = 198/3 x = 66 ∴ Rahul’s runs = x = 66 Sachin’s runs = 2x = 2 × 66 = 132

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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.