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# Miguel is mixing up a salad dressing.

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Joined: 07 Aug 2011
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Re: Miguel is mixing up a salad dressing. [#permalink]  15 Sep 2011, 00:48
take 24 as the total mixture.

O:V:Slt:P:Su
15:6:1:1:1 .... planned ratio

O:V:Slt:P
15:12:1:1 .... actual ratio

O = 15/29
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Re: Miguel is mixing up a salad dressing. [#permalink]  18 Dec 2011, 02:38
AndreG wrote:
Quote:

That's not what I've asked. I understand where you got the numbers and 24 is very clear to me.

I just thought that since he changed the ratio of various ingredients, the ratio of oil will be different as well. So I don't understand why we can assume that the ratio of the oil should remain the same? It if remains the same (as in your calculations, i.e., oil = 15x) the weight of the mixture will change. In my calculations I assumed that the weight of the mixture stays the same and the rate of the oil changes.

Maybe I didn't understand the the question well.

Yes I had the same problem!

I filled the mixture with 1/2 vinegar (i.e. 12), 1 salt and 1 pepper --> ending up with 10 left for oil, hence 10/24 = 5/12 is the proportion of oil in the dressing.

Someone please clarify where we went wrong...

Exactly!!!!!

I mean, I completely understand the answer - 15/29. I too would'v chosen 24 or a similar number as an LCM.But, what's wrong here... It jus happened that I got this approach..
Stuck here.. Can some one explain.. Experts....???

Thanks!
Re: Miguel is mixing up a salad dressing.   [#permalink] 18 Dec 2011, 02:38
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