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# In a certain school, the number of students who study

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Senior Manager
Joined: 22 May 2006
Posts: 375
Location: Rancho Palos Verdes
Followers: 1

Kudos [?]: 35 [0], given: 0

In a certain school, the number of students who study [#permalink]  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
_________________

The only thing that matters is what you believe.

Director
Joined: 13 Nov 2003
Posts: 790
Location: BULGARIA
Followers: 1

Kudos [?]: 30 [0], given: 0

Biology-26
Boys-18
Girls=2*(T-26)
Total=B+G
T=18+2*(T-26)
T=34
CEO
Joined: 20 Nov 2005
Posts: 2910
Schools: Completed at SAID BUSINESS SCHOOL, OXFORD - Class of 2008
Followers: 19

Kudos [?]: 132 [0], given: 0

Let x = total

Boys = 18 then girls = x-18

Biology = 26
Not biology = x-26

As given x-18 = 2(x-26)
x = 34
_________________

SAID BUSINESS SCHOOL, OXFORD - MBA CLASS OF 2008

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