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DS- percents

by venmic » Sat Aug 27, 2011 11:48 am
How is it possible that B is sufficient

Please see attachment Appreciate ur help[/img]
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Source: — Data Sufficiency |
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by force5 » Sun Aug 28, 2011 7:51 am
i am wondering what can be the source of the problem. The only way B could also be an independent answer is when B says- "r divided s = 75/100". May be we are misreading the divided sign to "+". Because thats what the 1st statement means.

by the looks of what is written (considering B says r+s= 75/100) ... the answer has to be A. because there is no way to give the answer with that information alone.


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by rog » Tue Aug 30, 2011 7:22 am
For statement II

r = (75/100) - s

r = (75/100) - (s/1)

r = (75/100) - (100s/100)

r = (75 - 100s)/100
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