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GMAT prep 2- Quant 7

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Source: — Data Sufficiency |
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by vittalgmat » Sat Apr 11, 2009 9:31 am
The Q stem can be rewritten as follows
450 <= x <= 549
350 <= y <= 449

It is obvious that the individual stmts will not satisfy.
we need to determine whether the answer is C or E.
For that choose the boundary values and add them
ie. 450 +350 = 800 ==>nearest hundred = 800
but 499 + 399 = 898 ==> nearest hundred = 900

Two different values for x+y so Answer is E.

The key take away is to find the range (mentioned in bold)

Ht helps
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by cramya » Sat Apr 11, 2009 9:53 am
Vittal rocking the DS fort :lol:

Regards,
CR
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by Sumit69 » Sat Apr 11, 2009 10:36 am
THANKS VITTAL.
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by vittalgmat » Sat Apr 11, 2009 3:02 pm
cramya wrote:Vittal rocking the DS fort :lol:

Regards,
CR
Thanks for the kind words.

lot of it is due to the contributions from ppl like u, logitech, Dana, and a lot others.
(stuart, brent, Ian, ron and others)
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