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RaghavSingla
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SaanviGahlot
Hi,

My question was do we have to take 'x' as a positive integer for all cases ? When case is related to number of people then yes x has to be positive integer. But if say the ratio indicates volume of 3 different liquids, then it should not be mandatory for x to be a positive integer right? It can be a fraction too ?

X can absolutely be a fraction. For instance, if a ratio of water to oil is 4:1, you can have (for example) 3 cups of water and 3/4 cups of oil. That would mean X = 3/4.

I don't know whether X can technically be negative, but I've never seen a ratio using negative numbers in an official GMAT problem. I imagine they'd have to make it extremely clear if they did that, and in most ratio problems, since you're dealing with actual quantities (people, liquids, etc) you won't be able to use negatives anyways.
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