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# If 500 is the multiple of 100 that is closest to x and 400

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Intern
Joined: 13 Aug 2005
Posts: 26
Location: Israel
If 500 is the multiple of 100 that is closest to x and 400 [#permalink]

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28 Aug 2005, 09:48
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If 500 is the multiple of 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?

(1) x < 500
(2) y < 400

Thanks, Yaron
Senior Manager
Joined: 04 May 2005
Posts: 279
Location: CA, USA

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28 Aug 2005, 10:45
yaron wrote:
If 500 is the multiple of 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?

(1) x < 500
(2) y < 400

Thanks, Yaron

If 500 is the multiple of 100 that is closest to x
=> 450<x<550
400 is the multiple of 100 that is closest to y
=> 350<y<450

with 1), => 450<x<500
2), => 350<y<400
combined, => 800 < x+y < 900

we still can't decide 800 or 900 which is closer

E
Re: DS - Algebra   [#permalink] 28 Aug 2005, 10:45
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