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GMAT Prep - Chairs

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by rosh26 » Sun Sep 07, 2008 11:20 am
Ok so I Understand that the cost would need to be greater than $33, so Stmt 1 is not sufficient. Can someone please explain stmt 2?

Thnks.
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Source: — Data Sufficiency |
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by ashishjha100 » Sun Sep 07, 2008 7:12 pm
St2:

[10 + (n-1)]/n = 1.36

ie .36 = 9n so n=25 ie n>24
Last edited by ashishjha100 on Mon Sep 08, 2008 6:30 am, edited 1 time in total.
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by tanvi512 » Mon Sep 08, 2008 3:35 am
@ashishjha
can u plz elaborate on how u formed the equation?
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by ashishjha100 » Mon Sep 08, 2008 6:35 am
tanvi512 wrote:@ashishjha
can u plz elaborate on how u formed the equation?
Average delivery cost of n chairs is 1.36

So we have n chairs, with cost of delivery for first chair is $10 and $1 extra for each (n-1) chairs

ie [$10 + (n-1)*$1]/n = 1.36

hope this helps.......
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