Muffin/Cake Question - GMATPREP : Quant Question Archive [LOCKED]
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# Muffin/Cake Question - GMATPREP

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Senior Manager
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02 Jun 2006, 10:19
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Thanks
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VP
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Re: Muffin/Cake Question - GMATPREP [#permalink]

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02 Jun 2006, 11:11
axl_oz wrote:
Thanks

p (B-CB-BM-2CMB) = 30/100 = 3/10

100 = C+M+B-CM-CB-BM-2CMB
100 = 50+40+B-20-CB-BM-2CMB
B-CB-BM-2CMB = 100-90+20
B-CB-BM-2CMB = 30
Manager
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Re: Muffin/Cake Question - GMATPREP [#permalink]

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02 Jun 2006, 16:26
Professor wrote:
axl_oz wrote:
Thanks

p (B-CB-BM-2CMB) = 30/100 = 3/10

100 = C+M+B-CM-CB-BM-2CMB
100 = 50+40+B-20-CB-BM-2CMB
B-CB-BM-2CMB = 100-90+20
B-CB-BM-2CMB = 30

How are you getting 2CMB?
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02 Jun 2006, 17:01
My Answer is 3/10. I used Venn diagram.
Director
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02 Jun 2006, 22:48
yeah use Venn diagram...

no cake or muffin = 100 - (cake + muffin - both)
= 100 - (50 + 40 - 20)
= 30

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Re: Muffin/Cake Question - GMATPREP [#permalink]

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20 May 2008, 16:04
when you subtract 20, i believe it should be subtracting 40... since the subtraction should be counted twice.
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Re: Muffin/Cake Question - GMATPREP [#permalink]

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20 May 2008, 17:08
Easy. 3/10 using venn diagram
Re: Muffin/Cake Question - GMATPREP   [#permalink] 20 May 2008, 17:08
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