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by sukh » Wed Sep 07, 2011 5:06 am
There are least 50 museums in City X that are open on
Tuesdays. If 20 percent of the museums in City X that are
open on Mondays are also open on Tuesdays, are more of
the museums open in City X on Mondays than Tuesdays?
(1) 40 museums in City X are open both Mondays and
Tuesdays.
(2) 30 percent of the museums in City X that are open
on Tuesdays are also open on Mondays
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Source: — Data Sufficiency |
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by cans » Wed Sep 07, 2011 5:18 am
20% of M open on T.
m>t??
b) 30% of t open on m.
Thus 20%m = 30%t or we can say m>t.
Sufficient
a) 20% of m = 40 -> m = 200..
on t? we don't know. insufficient
IMO B
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by [email protected] » Wed Sep 07, 2011 5:35 am
I think the answer is DD
From questions we know that there are at lest 50 museums open on tuesday.
From A: we know that 40 museums opens on Monday. 40 is less than 50. so there are more museums open on tuesday
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by cans » Thu Sep 08, 2011 4:06 am
a) 40 open on both monday and tuesday. (not only on monday)
so your reasoning is incorrect
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