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# Daifu University Question

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Senior Manager
Joined: 21 Mar 2004
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30 Jun 2004, 20:00
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

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: Russian Federation
GMAT 3: 740 Q40 V50
GMAT 4: 700 Q48 V38
GMAT 5: 710 Q45 V41
GMAT 6: 680 Q47 V36
GMAT 9: 740 Q49 V42
GMAT 11: 500 Q47 V33
GMAT 14: 760 Q49 V44
WE: Supply Chain Management (Energy and Utilities)
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01 Jul 2004, 03:43
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
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01 Jul 2004, 04:04

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
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Don't drink and derive!

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01 Jul 2004, 12:42
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
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02 Jul 2004, 08:33
excellent problem!
02 Jul 2004, 08:33
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