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 Post subject: Re: Cool Math Tricks
PostPosted: Thu Dec 03, 2009 6:51 pm 
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Joined: Thu Mar 27, 2008 5:54 pm
Posts: 3438
Favorite Team: Red Sox
Console '07: Nintendo Wii
Console '08: Nintendo Wii
Favorite Japanese title: Don't Own
Don't you need 2 possible equations?

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 Post subject: Re: Cool Math Tricks
PostPosted: Fri Dec 04, 2009 8:09 am 
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Joined: Fri Sep 19, 2008 9:16 pm
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Location: In front of my computer, drafting an FF league
Favorite Team: Pirates
Console '07: Nintendo Wii
Console '08: Wii and DS
Whoops! I changed it.


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 Post subject: Re: Cool Math Tricks
PostPosted: Fri Dec 04, 2009 5:37 pm 
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Joined: Thu Mar 27, 2008 5:54 pm
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Favorite Team: Red Sox
Console '07: Nintendo Wii
Console '08: Nintendo Wii
Favorite Japanese title: Don't Own
Wow, I fail pretty badly, I tried that for like 20 minutes before it even occurred to me that 1.99 multiplied by 8 is lower than 16.11

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 Post subject: Re: Cool Math Tricks
PostPosted: Fri Dec 04, 2009 9:49 pm 
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Joined: Mon Jun 16, 2008 2:21 pm
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Location: Baseball Heaven
Favorite Team: Phillies
Console '07: Nintendo Wii
Console '08: Nintendo Wii
1.69X+1.99Y=16.11

X+Y=8

X=8-Y

1.69(8-Y)+1.99Y=16.11

13.52-1.69Y+1.99Y=16.11

0.3Y=2.59

Y=8.63333...

X=-0.6333...

Therefore, Jeff bought -0.6333... of item X. There you go. :mrgreen:

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