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# A decorator bought a bolt of defective cloth that he judged

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Manager
Joined: 23 Mar 2008
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A decorator bought a bolt of defective cloth that he judged [#permalink]

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18 Apr 2008, 09:03
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

A decorator bought a bolt of defective cloth that he judged to be 3/4 usable, in which case the cost would be $0.80 per usable yard. It it was later found that only 2/3 of the bolt could be used , what was the actual cost per usable yard? a)$0.60
b) $0.90 c)$1.00
d) $1.20 e)$1.70
Manager
Joined: 02 Mar 2008
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Concentration: Finance, Strategy
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18 Apr 2008, 09:22
proportion of the actually can be used:
2/3:3/4 =8/9
-> cost increases, new cost =9/8*0.8=0.9
B
SVP
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18 Apr 2008, 11:46
0.8 = total cost / 0.75x where x=total length purchased

rearrange to get total = 3/5x

now, new cost per yard is total/(2/3x). plug in amount for total, x cancels out, and you get 9/10, or 0.9
VP
Joined: 10 Jun 2007
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18 Apr 2008, 13:11
puma wrote:
A decorator bought a bolt of defective cloth that he judged to be 3/4 usable, in which case the cost would be $0.80 per usable yard. It it was later found that only 2/3 of the bolt could be used , what was the actual cost per usable yard? a)$0.60
b) $0.90 c)$1.00
d) $1.20 e)$1.70

(3/4)/(2/3) * 0.8 = 9/8 * 8/10 = 0.9
Re: cloth   [#permalink] 18 Apr 2008, 13:11
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