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

Transcript

Ex 12.2, 3 Are the following statements true? (a) 40 persons : 200 persons = Rs 15 : Rs 75 Rs 15 : Rs 75 = (๐‘…๐‘  15)/(๐‘…๐‘  75) = 15/75 = 5/25 = 1/5 = 1 : 5 โˆด 40 persons : 200 persons = Rs 15 : Rs 75 Thus, True Ex 12.2, 3 Are the following statements true? (b) 7.5 litres : 15 litres = 5 kg : 10 kg7.5 litres : 15 litres = (7.5 ๐‘™๐‘–๐‘ก๐‘Ÿ๐‘’๐‘ )/(15 ๐‘™๐‘–๐‘ก๐‘Ÿ๐‘’๐‘ ) = 7.5/15 = (75/10)/15 = 75/10 ร— 1/15 = 5/10 = 1 : 2 5 kg : 10 kg = (5 ๐‘˜๐‘”)/(10 ๐‘˜๐‘”) = 5/10 = 1/2 = 1 : 2 โˆด 7.5 litres : 15 litres = 5 kg : 10 kg Thus, True Ex 12.2, 3 Are the following statements true? (c) 99 kg : 45 kg = Rs 44 : Rs 2099 kg : 45 kg = (99 ๐‘˜๐‘”)/(45 ๐‘˜๐‘”) = 99/45 = 33/15 = 11/5 = 11 : 5 Rs 44 : Rs 20 = (๐‘…๐‘  44)/(๐‘…๐‘  20) = 44/20 = 22/10 = 11/5 = 11 : 5 โˆด 99 kg : 45 kg = Rs 44 : Rs 20 Thus, True Ex 12.2, 3 Are the following statements true? (d) 32 m : 64 m = 6 sec : 12 sec 6 sec : 12 sec = (6 ๐‘ ๐‘’๐‘)/(12 ๐‘ ๐‘’๐‘) = 6/12 = 1/2 = 1 : 2 โˆด 32 m : 64 m = 6 sec : 12 sec Thus, True Ex 12.2, 3 Are the following statements true? (e) 45 km : 60 km = 12 hours : 15 hours 45 km : 60 km = (45 ๐‘˜๐‘š)/(60 ๐‘˜๐‘š) = 45/60 = 15/20 = 3/4 = 3 : 4 12 hours : 15 hours = (12 โ„Ž๐‘œ๐‘ข๐‘Ÿ๐‘ )/(15 โ„Ž๐‘œ๐‘ข๐‘Ÿ๐‘ ) = 12/15 = 4/5 = 4 : 5 โˆด 45 km : 60 km โ‰  12 hours : 15 hours Thus, False

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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.