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Topic: Systems of Linear Equations
Replies: 6   Last Post: Jan 29, 2011 10:13 PM

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Barb Knox

Posts: 577
Registered: 12/6/04
Re: Systems of Linear Equations
Posted: Jan 29, 2011 1:24 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

In article
<1350903580.11101.1296246811610.JavaMail.root@gallium.mathforum.org>,
mathematicsstudent <mathematicsstudent@hotmail.com> wrote:

> Hello,
>
> I have to solve this problem:
>
> The manager of a bulk foods establishment sells a trail mix for $8 per pound
> and premium cashews for $15 per pound. The manager wishes to make a 105-pound
> trail mix-cashew mixture that will sell for $12 per pound. How many pounds of
> each should be used?


<rant>

Yet another wretched attempt to make a mathematics problem seem relevant
to the "real world". In the actual real world, the price a retailer
charges for a mixture is NOT determined by the prices charged for the
separate ingredients. In the actual real world, the retailer would be
more likely to put in about 20% cashews and charge $11.95 per pound for
the New Cashew-Enhanced Trail Mix.

The really sad aspect of this is that with a half a minute of thought
the problem writer could have come up with a mixture problem that did
make sense in the "real world".

</rant>

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