text: ﻿ a:b is equal to 3:5 and 4b is equal to 9c.How do you work ou - science mathematics
  a:b is equal to 3:5 and 4b is equal to 9c.How do you work ou
  
  ## a:b is equal to 3:5 and 4b is equal to 9c.How do you work ou
  
  [From: Mathematics] [author: ] [Date: 01-07] [Hit: ]
  a:b is equal to 3:5 and 4b is equal to 9c.How do you work out a to c in its simplest form?Thanks?......
  
  a:b is equal to 3:5 and 4b is equal to 9c.How do you work out a to c in its simplest form?Thanks?
  
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  Krishnamurthy say: a : b = 3 : 5 = 12 : 20
  5a = 3b or 12b = 20a
  4b = 9c or 12b = 27c
  20a = 27c
  a : c = 27 : 20
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  Como say: a : b = 3 : 5
  a/b = 3/5
  5a = 3b
  4 b = 9c
  b = (9/4) c
  (5/3) a = (9/4) c
  20 a = 27 c
  a/c = 27/20
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  Brainard say: a/b = 3/5
  
  5a = 3b ..............(1)
  
  4b = 9c
  
  b = 9c/4 .............(2)
  
  Substitute for b, in (1)
  
  5a = 3(9c/4)
  
  5a = 27c/4
  
  a/c = 27/20
  
  a : c = 27 : 20
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  Lucinda say: Nfhfhd
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  fbetv say: kffflzzz
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  Captain Matticus, LandPiratesInc say: a/b = 3/5
  5a = 3b
  
  4b = 9c
  
  5a = 3b
  4 * 5a = 4 * 3b
  20a = 12b
  
  4b = 9c
  3 * 4b = 3 * 9c
  12b = 27c
  
  20a = 12b
  27c = 12b
  
  20a = 27c
  a/c = 27/20
  
  a:c = 27:20
  -
  wocey say: lngvrgub
  -
  taftq say: uamsyvsz
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