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Manager
Joined: 19 Aug 2009
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Question Stats:
37% (04:31) correct
62% (00:44) wrong based on 0 sessions
1. Of the teams competing in the world archery championships, twenty percent are from Europe. Half as many are from the United States and one twentieth are from Africa. What fraction of teams are from neither Europe, the US or Africa.
A ) 13/20
B ) 15/20
C ) 13/15
D ) 17/20
E ) 13/17
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Manager
Joined: 14 Aug 2009
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virtualanimosity wrote: 1. Of the teams competing in the world archery championships, twenty percent are from Europe. Half as many are from the United States and one twentieth are from Africa. What fraction of teams are from neither Europe, the US or Africa.
A ) 13/20
B ) 15/20
C ) 13/15
D ) 17/20
E ) 13/17 Half as many means half of EU, then EU 20% US 10% AF 5% the rest is 65%, answer A
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Kudos me if my reply helps!
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Manager
Joined: 28 Jul 2009
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Location: India
Schools: NUS, NTU, SMU, AGSM, Melbourne School of Business
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flyingbunny wrote: virtualanimosity wrote: 1. Of the teams competing in the world archery championships, twenty percent are from Europe. Half as many are from the United States and one twentieth are from Africa. What fraction of teams are from neither Europe, the US or Africa.
A ) 13/20
B ) 15/20
C ) 13/15
D ) 17/20
E ) 13/17 Half as many means half of EU, then EU 20% US 10% AF 5% the rest is 65%, answer A One Question. How could we determine "Half as many" are of EU only. I mean I took it as half of the total teams in the event. Though the answer that I got is not on the list. But still, if someone could put some light on it.
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GMAT offended me. Now, its my turn!
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Manager
Joined: 09 Aug 2009
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bhanushalinikhil wrote: flyingbunny wrote: virtualanimosity wrote: 1. Of the teams competing in the world archery championships, twenty percent are from Europe. Half as many are from the United States and one twentieth are from Africa. What fraction of teams are from neither Europe, the US or Africa.
A ) 13/20
B ) 15/20
C ) 13/15
D ) 17/20
E ) 13/17 Half as many means half of EU, then EU 20% US 10% AF 5% the rest is 65%, answer A One Question. How could we determine "Half as many" are of EU only. I mean I took it as half of the total teams in the event. Though the answer that I got is not on the list. But still, if someone could put some light on it. Ya we can't take half as many of EU. Assume X as total then EU=0.2X and US=0.5X and AF=0.05X EU+US+AF+other = 1X 0.2X+0.5X+0.05X+other =1X other = 0.25X /Prabu
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Joined: 18 Dec 2010
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Assume 100 total people.
20% of 100 = 20 --->Europeans
1/2 of 20 ---> 10 Americans
1/20 of 100 ---> 5 Africans
Now you would add them all up, and minus it by the total (100). 100 - 35= 65. So, 65 people out of 100 are not EU, US or Africans. 65/100 is also equal to 13/20.
So therefore, the answer is A.
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Manager
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this question is not clearly. half of as many... ? as many of what? 
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Manager
Joined: 21 Jul 2010
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+1 for A
I understood half of EU.
It works by plugging numbers EU=20 US=10 and Africa=5
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