Question 1 - Page 109 - Finding the Unknown - Chapter 5 Class 8 - Tales by Dots and Lines (Ganita Prakash II)

Last updated at August 14, 2026 by

[Maths] Coach Balwan noted down the weights of the kushti players - Finding the Unknown

part 2 - Question 1 - Page 109 - Finding the Unknown - Chapter 5 Class 8 - Tales by Dots and Lines (Ganita Prakash II) - Class 8 (Ganita Prakash - 1, 2 & Old NCERT)

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Question 1 - Page 109 Coach Balwan noted down the weights of the kushti players (wrestlers) and the mean as shown. But one value that was written down got smudged. Can you find out the missing value?Let Missing value = x Thus, our data is 42, 40, 39, 33, 48, 38, 42, 35, 32, x Given Mean = 39.2 Finding Mean using formula Mean = (๐‘†๐‘ข๐‘š ๐‘œ๐‘“ ๐‘Ž๐‘™๐‘™ ๐‘ก๐‘’๐‘Ÿ๐‘š๐‘ )/(๐‘๐‘ข๐‘š๐‘๐‘’๐‘Ÿ ๐‘œ๐‘“ ๐‘ก๐‘’๐‘Ÿ๐‘š๐‘ ) 39.2 = (42 + 40 + 39 + 33 + 48 + 38 + 42 + 35 + 32 + ๐‘ฅ)/10 39.2 = (๐Ÿ‘๐Ÿ’๐Ÿ— + ๐’™)/๐Ÿ๐ŸŽ 39.2 ร— 10 = 349 + x 392 = 349 + x 392 โ€“ 349 = x 43 = x x = 43 Thus, missing value is 43

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