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04 Oct 2007, 05:29
Kudos
Bookmarks
Please solve this.
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04 Oct 2007, 06:19
Kudos
Bookmarks
(E) for me 
We have:
o 450 < x < 551
o 350 < y < 451
=> 800 < x+y < 1002
So, we could have:
- If 800 < x+y < 851 : 800
- If 850 < x+y < 951 : 900
- If 950 < x+y < 1002 : 1000
All depend on how much we could narrow down the range of x and/or y.
Stat1
x < 500
Implies that:
o 450 < x < 500
o 350 < y < 451
=> 800 < x+y < 951
We could have 800 or 900.
INSUFF.
Stat2
y < 400
Implies that:
o 450 < x < 551
o 350 < y < 400
=> 800 < x+y < 951
We could have 800 or 900.
INSUFF.
Both 1 and 2
o 450 < x < 500
o 350 < y < 400
=> 800 < x+y < 900
- If 800 < x+y < 851 : 800
- If 850 < x+y < 900 : 900
INSUFF.
We have:
o 450 < x < 551
o 350 < y < 451
=> 800 < x+y < 1002
So, we could have:
- If 800 < x+y < 851 : 800
- If 850 < x+y < 951 : 900
- If 950 < x+y < 1002 : 1000
All depend on how much we could narrow down the range of x and/or y.
Stat1
x < 500
Implies that:
o 450 < x < 500
o 350 < y < 451
=> 800 < x+y < 951
We could have 800 or 900.
INSUFF.
Stat2
y < 400
Implies that:
o 450 < x < 551
o 350 < y < 400
=> 800 < x+y < 951
We could have 800 or 900.
INSUFF.
Both 1 and 2
o 450 < x < 500
o 350 < y < 400
=> 800 < x+y < 900
- If 800 < x+y < 851 : 800
- If 850 < x+y < 900 : 900
INSUFF.
