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og ratio ps 335

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og ratio ps 335 [#permalink] New post 16 Jan 2006, 18:07
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:) the ratio by volume of soap to alcohol to water is 2:50 :100
The solution will be altered so that the ratio of soap to alcohol is doubled while the ratio of soap is halved . If the altered solution will contain 100 cubic centimeter of alcohol how many cubic centimeters of water will it contain?

50
200
400
625
800

PLZ Explain your work
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 [#permalink] New post 16 Jan 2006, 18:27
S:A:W
2:50:100 which can be written as
1:25:50

After altering the solution becomes
2:25 and 0.5:50

so the final combination is
2:25:200

So if the Alcohol is 100 then water is 800.
  [#permalink] 16 Jan 2006, 18:27
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