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  1. Chapter 12 Class 6 Ratio And Proportion
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Ex 12.1, 10 In a college, out of 4320 students, 2300 are girls. Find the ratio of (a) Number of girls to the total number of students. Ratio = (๐‘๐‘ข๐‘š๐‘๐‘’๐‘Ÿ ๐‘œ๐‘“ ๐‘”๐‘–๐‘Ÿ๐‘™๐‘ )/(๐‘‡๐‘œ๐‘ก๐‘Ž๐‘™ ๐‘›๐‘ข๐‘š๐‘๐‘’๐‘Ÿ ๐‘œ๐‘“ ๐‘ ๐‘ก๐‘ข๐‘‘๐‘’๐‘›๐‘ก๐‘ ) = 2300/4320 Cancelling 0s = 230/432 = 115/216 โˆด Required ratio is 115 : 216 Ex 12.1, 10 In a college, out of 4320 students, 2300 are girls. Find the ratio of (b) Number of boys to the number of girls Total number of students = 4320 Number of girls = 2300 Number of boys = Total number of students โˆ’ Number of girls = 4320 โˆ’ 2300 = 2020 Ratio = (๐‘๐‘ข๐‘š๐‘๐‘’๐‘Ÿ ๐‘œ๐‘“ ๐‘๐‘œ๐‘ฆ๐‘ )/(๐‘๐‘ข๐‘š๐‘๐‘’๐‘Ÿ ๐‘œ๐‘“ ๐‘”๐‘–๐‘Ÿ๐‘™๐‘ ) = 2020/2300 Cancelling 0s = 202/230 = 101/115 โˆด Required ratio is 101 : 115 Ex 12.1, 10 In a college, out of 4320 students, 2300 are girls. Find the ratio of (c) Number of boys to the total number of students Ratio = (๐‘๐‘ข๐‘š๐‘๐‘’๐‘Ÿ ๐‘œ๐‘“ ๐‘๐‘œ๐‘ฆ๐‘ )/(๐‘‡๐‘œ๐‘ก๐‘Ž๐‘™ ๐‘›๐‘ข๐‘š๐‘๐‘’๐‘Ÿ ๐‘œ๐‘“ ๐‘ ๐‘ก๐‘ข๐‘‘๐‘’๐‘›๐‘ก๐‘ ) = 2020/4320 Cancelling 0s = 202/432 = 101/216 โˆด Required ratio is 101 : 216

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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.