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Help on a PS question please.

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by theCodeToGMAT » Wed Oct 23, 2013 5:07 am
Let the lowest population be "x"

So, x + 10(1.1)x = 132000
12x = 132000
x = 11000

Answer[spoiler] {D}[/spoiler]
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by srinivasapriyan.r » Wed Oct 23, 2013 5:52 am
Thanks:)
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by dominhtri1995 » Wed Oct 23, 2013 9:38 am
I think it is C indeed
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by [email protected] » Wed Oct 23, 2013 10:48 am
Hi All,

In questions that ask for a minimum (or maximum) value of a variable, the typical way to solve it is to maximize (or minimize) the other variable(s) in the prompt.

Here, we're asked for the minimum population for one district, so we have to maximize all of the other districts. Based on the limitations of the question, the maximum value of the other 10 districts would be 12,100, so the minimum value would be 11,000 (Rahul provides an equation that proves it).

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