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

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Posts: 2
Registered: 1/28/11
Systems of Linear Equations
Posted: Jan 28, 2011 3:33 PM
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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?

I figured out that the first equation should be:
X + Y = 105

How do I write the other equation? I tried this, but it didn't work:
.08x + .15Y = 12

If you can guide me along, I would greatly appreciate it!

Thank you.

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