Pure ethanol is denatured by adding methanol to it to make : PS Archive
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# Pure ethanol is denatured by adding methanol to it to make

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Senior Manager
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Pure ethanol is denatured by adding methanol to it to make [#permalink]

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13 Mar 2004, 15:17
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Pure ethanol is denatured by adding methanol to it to make it unpotable. The process of denaturing ethanol is a three-stage one. In each stage 10% of the volume of the container is replaced with pure methanol. At the end of the process, what is the strength of methanol in the mixture?

72.9%
19.2
33
27.1
54.4
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Pls include reasoning along with all answer posts.
****GMAT Loco****
Este examen me conduce jodiendo loco

Senior Manager
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Kudos [?]: 10 [0], given: 0

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13 Mar 2004, 16:13
27.1

1st stage - 10%
2nd stage - 9%
3rd stage - 8.1%
Senior Manager
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13 Mar 2004, 16:17
Geethu, ur right
but, please show how u came to that conclusion
thanx
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Pls include reasoning along with all answer posts.
****GMAT Loco****
Este examen me conduce jodiendo loco

13 Mar 2004, 16:17
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# Pure ethanol is denatured by adding methanol to it to make

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