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Old 04-13-2007   #6
Sillysidley

 
Join Date: Oct 2006
Posts: 822
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I can't scan my homework though.
Can I post a problem manually for no points

Anyway, here is one of my homework problems:
In how many ways can you sell $5 and $3 pumpkins to make $200?
It's a diophantine equation. Let x=#of $5 pumpkins, and y=# of $ 3 pumpkins.

5x+3y=200
Solve for x,
x=40-3y/5

So y must be a multiple of 5. It goes up to until 40-3y/5 is negative.
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Last edited by Mr. Hui; 04-13-2007 at 09:31 AM..
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