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by gmatmachoman » Tue Aug 17, 2010 10:16 am
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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by Makushr1 » Tue Aug 17, 2010 10:38 am
answer?
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by gmatmachoman » Tue Aug 17, 2010 10:42 am
Makushr1 wrote:answer?

where is ur approach dude???clue..use set theory rules for 2 components...
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by uwhusky » Tue Aug 17, 2010 10:46 am
I don't get this question at all...

Is the goal trying to figure out which answer could result in the lowest number? If so, I pick 4 =).
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by selango » Tue Aug 17, 2010 10:53 am
Rooms which are suites = X
Rooms which are light blue = Y

XuY=X+Y-Both

Both=X+Y-XuY

Both will be least if XuY is 100% (ie) All the rooms are either suit or either blue painted

Both=X+Y-100

Pick D
--Anand--
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by kvcpk » Tue Aug 17, 2010 11:53 am
gmatmachoman wrote: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
calculations not needed.
Assume All rooms are light blue painted and no room is a suit.
y=100, x=0

Common should be 0.
By substituting, only D remains.
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