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Expert replies
Source: — Data Sufficiency |

someone

by d77 » Wed Dec 13, 2006 9:50 pm
help
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Re: from gmatprep

by gmat_enthus » Thu Dec 14, 2006 2:06 pm
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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by f2001290 » Mon May 14, 2007 6:30 am
I think the answer is E
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