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ps - food [#permalink] New post 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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 [#permalink] New post 26 Dec 2005, 12:51
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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 [#permalink] New post 26 Dec 2005, 16:41
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. :wink:
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 [#permalink] New post 26 Dec 2005, 19:09
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. :idea: Duttsit rocks :band :musband
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 [#permalink] New post 26 Dec 2005, 19:24
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 :P
  [#permalink] 26 Dec 2005, 19:24
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