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# Of the 120 members of a science committee, 60 are from

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Current Student
Joined: 11 May 2008
Posts: 552
Of the 120 members of a science committee, 60 are from [#permalink]

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05 Sep 2008, 03:38
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Of the 120 members of a science committee, 60 are from Europe or Asia, 70 are from Asia or America, and 80 are from Europe or America. If the rest members are from Africa and each member could be from only one continent, how many members are from Africa?
A. 10
B. 15
C. 20
D. 25
E. 30
Manager
Joined: 15 Jul 2008
Posts: 205

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05 Sep 2008, 08:50
arjtryarjtry wrote:
Of the 120 members of a science committee, 60 are from Europe or Asia, 70 are from Asia or America, and 80 are from Europe or America. If the rest members are from Africa and each member could be from only one continent, how many members are from Africa?
A. 10
B. 15
C. 20
D. 25
E. 30

Good one arjarjarjarj...

Call E=europe A=asia and M=america F=africa
E+A = 60
A + M = 70
M + E = 80

Add all to get 2(A+E+M)=210 so A+E+M = 105

Now A+M+E+F = 120. so F=15
Current Student
Joined: 11 May 2008
Posts: 552

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05 Sep 2008, 08:57
nice one right???

even i was baffled , and could not solve it ...
but after some wonderful soul like you helped me .. i realised my folly.
good work giri.
keep it up.
SVP
Joined: 07 Nov 2007
Posts: 1765
Location: New York

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05 Sep 2008, 10:51
arjtryarjtry wrote:
Of the 120 members of a science committee, 60 are from Europe or Asia, 70 are from Asia or America, and 80 are from Europe or America. If the rest members are from Africa and each member could be from only one continent, how many members are from Africa?
A. 10
B. 15
C. 20
D. 25
E. 30

2(E+As+Am)=210
Af = 120 - (E+As+Am)=120-105=15
_________________

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Director
Joined: 27 Jun 2008
Posts: 527
WE 1: Investment Banking - 6yrs

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05 Sep 2008, 11:02
arjtryarjtry - good question +1

I was ratting my head over this.
Same approach as bhushangiri & suresh.
Re: members from africa   [#permalink] 05 Sep 2008, 11:02
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# Of the 120 members of a science committee, 60 are from

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