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In a certain school, the number of students who study

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Senior Manager
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Joined: 22 May 2006
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Location: Rancho Palos Verdes
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In a certain school, the number of students who study [#permalink] New post 04 Aug 2006, 22:44
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In a certain school, the number of students who study biology is 26 and the number of boys in the shcool is 18. If the number of girls in the school is twice the number of students in the school who are not studying biology, what is the total number of students?

A. 30
B. 34
C. 38
D. 40
E. 45
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Director
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Joined: 13 Nov 2003
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 [#permalink] New post 04 Aug 2006, 23:46
Biology-26
Boys-18
Girls=2*(T-26)
Total=B+G
T=18+2*(T-26)
T=34
CEO
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Joined: 20 Nov 2005
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Schools: Completed at SAID BUSINESS SCHOOL, OXFORD - Class of 2008
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 [#permalink] New post 05 Aug 2006, 00:37
Let x = total

Boys = 18 then girls = x-18

Biology = 26
Not biology = x-26

As given x-18 = 2(x-26)
x = 34
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SAID BUSINESS SCHOOL, OXFORD - MBA CLASS OF 2008

  [#permalink] 05 Aug 2006, 00:37
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