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GMAT Prep - Chairs

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Junior | Next Rank: 30 Posts
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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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