Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 28 May 2015, 20:34

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Of the 200 students at College T majoring in one or more of

Author Message
TAGS:
Manager
Joined: 27 Mar 2008
Posts: 81
Followers: 1

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

Of the 200 students at College T majoring in one or more of [#permalink]  26 Aug 2008, 22:46
00:00

Difficulty:

(N/A)

Question Stats:

50% (02:51) correct 50% (02:13) wrong based on 6 sessions
Of the 200 students at College T majoring in one or more of the sciences, 130 are majoring in chemistry and 150 are majoring in biology. If at least 30 of the students are not majoring in either chemistry or biology, then the number of students majoring in both chemistry and biology could be any number from

a) 20 to 50

b) 40 to 70

c) 50 to 130

d) 110 to 130

e) 110 to 150
Director
Joined: 14 Aug 2007
Posts: 734
Followers: 8

Kudos [?]: 120 [1] , given: 0

Re: PS: Chem/Bio majors (OG #239) [#permalink]  26 Aug 2008, 23:05
1
KUDOS
D.

let x is # of students common to chemistry and biology, then

(130 -x ) + x + (150 -x) + 30 = 200

x = 110

Since 130 is the number of students who can take chemistry, number of common students cant be more than 130.

Thus D
Manager
Joined: 14 Jun 2008
Posts: 161
Followers: 1

Kudos [?]: 27 [0], given: 0

Re: PS: Chem/Bio majors (OG #239) [#permalink]  26 Aug 2008, 23:14
Total # of science students = 170

chem + bio = 130 + 150 = 280

minimum number of studnets doing both (chem and bio) = 280 - 170 = 110

upper range will be min(130,150)

110 to 130

D
Manager
Joined: 27 Mar 2008
Posts: 81
Followers: 1

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

Re: PS: Chem/Bio majors (OG #239) [#permalink]  28 Aug 2008, 07:45
I'm retarded. It was late when I tried this problem. Tried again and I added incorrectly.

130 + 150 - x + 30 = 200

310 - x = 200

x= 110 (min)

max 130 chem students
Re: PS: Chem/Bio majors (OG #239)   [#permalink] 28 Aug 2008, 07:45
Similar topics Replies Last post
Similar
Topics:
17 Of the 200 students at College T majoring in one or more of 10 29 Dec 2012, 05:57
4 Of the 200 students at College T majoring in one or more of 2 05 Oct 2012, 08:23
Of the 200 students at College T majoring in one or more of 1 22 Sep 2008, 12:28
1 Of the 200 students at college T majoring in one or more of 3 25 Jan 2008, 11:52
Of the 200 students at College T majoring in one or more of 4 12 Oct 2005, 18:21
Display posts from previous: Sort by