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d77
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PostPosted: Wed Dec 13, 2006 7:19 am    Post subject: from gmatprep Reply with quote
If 500 is multiple 100 that is closest to x and 400 is the multiple of 100 that is closest to y, which multiple of 100 is closest to x+y?

X<500
Y<400
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d77
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PostPosted: Wed Dec 13, 2006 10:50 pm    Post subject: someone Reply with quote
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PostPosted: Thu Dec 14, 2006 3:06 pm    Post subject: Re: from gmatprep Reply with quote
d77 wrote:
If 500 is multiple 100 that is closest to x and 400 is the multiple of 100 that is closest to y, which multiple of 100 is closest to x+y?

X<500
Y<400


IMO E. Whats OA?

From given 450 < x < 550 and 350 < y < 450 => 800< x+y < 1000

So possible multiples of 100 closest to x+y are 800, 900 and 1000

1. x<500. so 800 < x+y < 950. still 2 choices 800, 900
2. Similar to above

both taken, we get 800<x+y<900. depends on values of x and y. If x=451 and y=351, 800 is closest. similarly if x=499 and y=399, 900 is closest.
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PostPosted: Mon May 14, 2007 7:30 am    Post subject: Reply with quote
I think the answer is E
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