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
X<500
Y<400
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Source: Beat The GMAT — Data Sufficiency |
IMO E. Whats OA?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
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.
