Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

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

 Search Thread: Advanced Search

 Messages: [ Previous | Next ]
 Barb Knox Posts: 578 Registered: 12/6/04
Re: Systems of Linear Equations
Posted: Jan 29, 2011 1:24 AM
 Plain Text 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>

[snip]
--
---------------------------
| BBB b \ Barbara at LivingHistory stop co stop uk
| B B aa rrr b |
| BBB a a r bbb | Quidquid latine dictum sit,
| B B a a r b b | altum videtur.
| BBB aa a r bbb |
-----------------------------

Date Subject Author
1/28/11 mathematicsstudent
1/28/11 William Elliot
1/29/11 Barb Knox
1/29/11 The Qurqirish Dragon
1/29/11 Barb Knox
1/29/11 Stan Brown
1/29/11 Alexandros Bantis

© The Math Forum at NCTM 1994-2018. All Rights Reserved.