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  1. Chapter 8 Class 7 Comparing Quantities
  2. Serial order wise
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Ex 8.2, 3 (i) Estimate what part of the figures is colored and hence find the per cent which is colored. Part of figure coloured = ๐Ÿ/๐Ÿ’ Percentage shaded = (๐‘ƒ๐‘Ž๐‘Ÿ๐‘ก ๐‘ โ„Ž๐‘Ž๐‘‘๐‘’๐‘‘)/(๐‘‡๐‘œ๐‘ก๐‘Ž๐‘™ ๐‘๐‘Ž๐‘Ÿ๐‘ก๐‘ ) ร— 100% = (1/4)/1 ร— 100% = 1/4 ร— 100% = 100/4 % Ex 8.2, 3 (ii) Estimate what part of the figures is colored and hence find the per cent which is colored. Parts shaded = 3 Total parts = 5 So, Percentage shaded = (๐‘ƒ๐‘Ž๐‘Ÿ๐‘ก๐‘  ๐‘ โ„Ž๐‘Ž๐‘‘๐‘’๐‘‘)/(๐‘‡๐‘œ๐‘ก๐‘Ž๐‘™ ๐‘๐‘Ž๐‘Ÿ๐‘ก๐‘ ) ร— 100% = 3/5 ร— 100% = 3 ร— 20% = 60% Ex 8.2, 3 (iii) Estimate what part of the figures is colored and hence find the per cent which is colored. Parts shaded = 3 Total parts = 8 So, Percentage shaded = (๐‘ƒ๐‘Ž๐‘Ÿ๐‘ก๐‘  ๐‘ โ„Ž๐‘Ž๐‘‘๐‘’๐‘‘)/(๐‘‡๐‘œ๐‘ก๐‘Ž๐‘™ ๐‘๐‘Ž๐‘Ÿ๐‘ก๐‘ ) ร— 100% = 3/8 ร— 100% = 3/4 ร— 50% = 3/2 ร— 25% = 75/2 % = 37.5%

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.