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# ps - food

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VP
Joined: 30 Sep 2004
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ps - food [#permalink]  26 Dec 2005, 10:55
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if a kind of packaged food increase 40% of its quantity and the price x remains constant, the customer can economize how much when buy one ounce of such food?
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VP
Joined: 22 Aug 2005
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Location: CA
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2/7 or 28%

let:
q : initial quatity purchased in $x thus 1.4q = new quantity in$x

economise = old price/ounce - new price / ounce
= x/q - x/(1.4q) = 2/7 x/q = 2/7 of original price/ounce
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Whether you think you can or think you can't. You're right! - Henry Ford (1863 - 1947)

SVP
Joined: 05 Apr 2005
Posts: 1733
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Kudos [?]: 38 [0], given: 0

duttsit wrote:
2/7 or 28%

let:
q : initial quatity purchased in $x thus 1.4q = new quantity in$x

economise = old price/ounce - new price / ounce
= x/q - x/(1.4q) = 2/7 x/q = 2/7 of original price/ounce

go with dutt, confirm and lock it.
SVP
Joined: 16 Oct 2003
Posts: 1815
Followers: 4

Kudos [?]: 50 [0], given: 0

duttsit wrote:
2/7 or 28%

let:
q : initial quatity purchased in $x thus 1.4q = new quantity in$x

economise = old price/ounce - new price / ounce
= x/q - x/(1.4q) = 2/7 x/q = 2/7 of original price/ounce

Very elegantly solved. I was waiting for my light to get lit. Duttsit rocks
SVP
Joined: 24 Sep 2005
Posts: 1893
Followers: 11

Kudos [?]: 139 [0], given: 0

duttsit wrote:
2/7 or 28%

let:
q : initial quatity purchased in $x thus 1.4q = new quantity in$x

economise = old price/ounce - new price / ounce
= x/q - x/(1.4q) = 2/7 x/q = 2/7 of original price/ounce

yup, really elegent and ........cute
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