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# Daifu University Question

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Senior Manager
Joined: 21 Mar 2004
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Location: Cary,NC
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Daifu University Question [#permalink]  30 Jun 2004, 19:00
Could someone explain the answer to me ? I couldn't get it
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_________________

ash
________________________
I'm crossing the bridge.........

Joined: 31 Dec 1969
Location: India
Concentration: General Management, Strategy
GMAT 1: 710 Q49 V0
GMAT 2: 740 Q40 V50
GMAT 3: 700 Q48 V38
GPA: 3.6
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Kudos [?]: 88 [0], given: 87033

Look at the solution this way...

Let there be total of 100 students

Therefore no. of students who are members of commitee and also want to reduce costs = 40

Students who want reduced costs but not members of committee are 20% of total students who want reduced costs(TC).

Therefore students who want reduced costs and are member of commitee are 80% of total students who want reduced costs, which is 40 as mentioned above.

Hence .8 of TC = 40 => TC = 50.

Hope this helps
Intern
Joined: 19 May 2004
Posts: 47
Followers: 0

Kudos [?]: 2 [0], given: 0

Look at the solution this way...

Let there be total of 100 students

Therefore no. of students who are members of commitee and also want to reduce costs = 40

Students who want reduced costs but not members of committee are 20% of total students who want reduced costs(TC).

Therefore students who want reduced costs and are member of commitee are 80% of total students who want reduced costs, which is 40 as mentioned above.

Hence .8 of TC = 40 => TC = 50.

Hope this helps
_________________

Don't drink and derive!

Intern
Joined: 09 May 2004
Posts: 27
Location: houston, tx
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Kudos [?]: 0 [0], given: 0

When they give you two sets of categories (in this case, 1) members/non-members and 2) reduce tuition / not reduce), I make a matrix to keep all the info straight and I find this easiest. This particular problem wasn't too hard, but sometimes they will make it really wordy and not so straightforward which is why sometimes making a matrix would help.

I just jot down the categories (male/female, student/teacher, students who fail/students who pass, etc), pick numbers, and then fill it out as I read (in this case, if total students is 100, that means non-members supporting reduction is 40, etc.). I tend to get confused by all the wording, so this way you can just see the relationships.
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Senior Manager
Joined: 07 Oct 2003
Posts: 358
Location: Manhattan
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excellent problem!
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