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X percents of the rooms are suits, Y percent of the rooms

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X percents of the rooms are suits, Y percent of the rooms [#permalink] New post 07 Mar 2008, 02:35
X percents of the rooms are suits, Y percent of the rooms are painted light blue. Which of the following best represents the least percentage of the light blue painted suits?

1) X-Y
2)Y-X +100
3)100X-Y
4)X+Y-100
e)100-XY
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Re: sets [#permalink] New post 07 Mar 2008, 08:19
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^^ same answer. least y happens when x is max, and we can have everyone in suites, i.e. 100% in suits, and 0% in other rooms, so x+y-100=0
Re: sets   [#permalink] 07 Mar 2008, 08:19
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X percents of the rooms are suits, Y percent of the rooms

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