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  1. Chapter 12 Class 6 Ratio And Proportion
  2. Serial order wise

Transcript

Ex 12.1, 7 Find the ratio of the following: (a) 30 minutes to 1.5 hours Here, We convert hours into minutes 1.5 hours = 1.5 ร— 60 minutes = 15/10 ร— 60 = 15 ร— 6 = 90 minutes So, Ratio = (30 ๐‘š๐‘–๐‘›๐‘ข๐‘ก๐‘’๐‘ )/(90 ๐‘š๐‘–๐‘›๐‘ข๐‘ก๐‘’๐‘ ) = 30/90 Cancelling 0s = 3/9 = 1/3 โˆด Required ratio = 1 : 3 Ex 12.1, 7 Find the ratio of the following: (b) 40 cm to 1.5 m40 cm to 1.5 m Here, We convert m into cm 1.5 m = 1.5 ร— 100 m = 15/10 ร— 100 = 15 ร— 10 = 150 cm So, Ratio = (40 ๐‘๐‘š)/(150 ๐‘๐‘š) = 40/150 Cancelling 0s = 4/15 โˆด Required ratio = 4 : 15 Ex 12.1, 7 Find the ratio of the following: (c) 55 paise to Rs 1 55 paise to Rs 1 Here, We convert Rs into paise Rs 1 = 1 ร— 100 paise = 100 paise So, Ratio = (55 ๐‘๐‘Ž๐‘–๐‘ ๐‘’)/(100 ๐‘๐‘Ž๐‘–๐‘ ๐‘’) = 55/100 โˆด Required ratio is 11 : 20 Ex 12.1, 7 Find the ratio of the following: (d) 500 ml to 2 litresHere, We convert litre into ml 2 litres = 2 ร— 1000 ml = 2000 ml So, Ratio = (500 ๐‘š๐‘™)/(2000 ๐‘š๐‘™) = 500/2000 Cancelling 0s = 5/20 = 1/4 โˆด Required ratio = 1 : 4

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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.