Ex 11.4, 1 (b) The length of a rectangular hall is 4 meters less than 3 times the breadth of the hall. What is the length, if the breadth is b meters? Given that, Breadth of the hall = b m. Now, Length of the hall = = 3 × b − 4 = 3b − 4 ∴ Length of hall = (3b − 4) metres.

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.

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