Ex 12.1

Chapter 12 Class 6 Ratio And Proportion
Serial order wise

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Ex 12.1, 14 (Method 1) Divide 20 pens between Sheela and Sangeeta in the ratio of 3 : 2. Total number of pens = 20 Given Ratio = 3 : 2 (๐๐ข๐๐๐๐ ๐๐ ๐๐๐๐  ๐ค๐๐กโ ๐โ๐๐๐๐)/(๐๐ข๐๐๐๐ ๐๐ ๐๐๐๐  ๐ค๐๐กโ ๐๐๐๐๐๐๐ก๐) = 3/2 Number of pens with Sheela = 3/2 ร Number of pens with Sangeeta Now, Total number of pens = Number of pens with Sheela + Number of pens with Sangeeta 20 = 3/2 Number of pens with Sangeeta + Number of pens with Sangeeta 20 = (3/2+1) Number of pens with Sangeeta 20 = ((3 + 2)/2) Number of pens with Sangeeta 20 = 5/2 ร Number of pens with Sangeeta 20 ร 2/5 = Number of pens with Sangeeta 4 ร 2 = Number of pens with Sangeeta 8 = Number of pens with Sangeeta Number of pens with Sangeeta = 8 pens Also, Number of pens with Sheela = 3/2 ร Number of pens with Sangeeta = 3/2 ร 8 = 3 ร 4 = 12 pens Ex 12.1, 14 (Method 2) Divide 20 pens between Sheela and Sangeeta in the ratio of 3 : 2.Total number of pens = 20 Given Ratio = 3 : 2 (๐๐ข๐๐๐๐ ๐๐ ๐๐๐๐  ๐ค๐๐กโ ๐โ๐๐๐๐)/(๐๐ข๐๐๐๐ ๐๐ ๐๐๐๐  ๐ค๐๐กโ ๐๐๐๐๐๐๐ก๐) = 3/2 which means 3 parts of total pens goes to Sheela and 2 parts of total pens goes to Sangeeta So, pens are divided in = 3 + 2 = 5 parts From which, Sheela gets 3 parts out of 5 parts and Sangeeta gets 2 parts out of 5 parts Number of pens with Sheela = 3/5 ร 20 = 3 ร 4 = 12 pens Number of pens with Sangeeta = 2/5 ร 20 = 2 ร 4 = 8 pens From which, Sheela gets 3 parts out of 5 parts and Sangeeta gets 2 parts out of 5 parts Number of pens with Sheela = 3/5 ร 20 = 3 ร 4 = 12 pens Number of pens with Sangeeta = 2/5 ร 20 = 2 ร 4 = 8 pens

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#### Davneet Singh

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.