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VDub
Scoundrel



Registered: Feb 2008
Location: Toronto
Math Question...

OK all you smart college types...

Billy has two chunks of copper alloy...

one is 60% copper and the other is 40% copper...

He melts the two together and the resulting piece weighs 400g and is 51% copper...

How much did each of the original chunks weigh????


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quote:
Originally posted by chinamon
chinamon is INCH MOAN.
LOL so fitting.

Old Post Sep-29-2008 21:14 
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junkie_vince
Supreme tranceaddict



Registered: Dec 2005
Location: T o r o n t O

who the fuck is billy?


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Old Post Sep-29-2008 21:17 
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Vivid Boy
TA's GodFather



Registered: Sep 2001
Location: T.O
Re: Math Question...

quote:
Originally posted by VDub
OK all you smart college types...

Billy has two chunks of copper alloy...

one is 60% copper and the other is 40% copper...

He melts the two together and the resulting piece weighs 400g and is 51% copper...

How much did each of the original chunks weigh????


george brown college, plumbing?

Old Post Sep-29-2008 21:17 
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VDub
Scoundrel



Registered: Feb 2008
Location: Toronto
Re: Re: Math Question...

quote:
Originally posted by Vivid Boy
george brown college, plumbing?


LOL...

Actually I work right kitty corner to George Brown...

And I'm not a plumber....

This was a question on my lil bro's homework and he needed help...

I think I figured it out but wanted to confirm...


___________________
quote:
Originally posted by chinamon
chinamon is INCH MOAN.
LOL so fitting.

Old Post Sep-29-2008 21:22 
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VDub
Scoundrel



Registered: Feb 2008
Location: Toronto

quote:
Originally posted by junkie_vince
who the fuck is billy?


Billy's your boy...


___________________
quote:
Originally posted by chinamon
chinamon is INCH MOAN.
LOL so fitting.

Old Post Sep-29-2008 21:23 
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cammaxwell
Supreme tranceaddict



Registered: Mar 2007
Location: Toronto, Canada

204g


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Old Post Sep-29-2008 21:26  Canada
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VDub
Scoundrel



Registered: Feb 2008
Location: Toronto

quote:
Originally posted by cammaxwell
204g


There are two pieces........

So you're saying that the second one was 196g???


___________________
quote:
Originally posted by chinamon
chinamon is INCH MOAN.
LOL so fitting.

Old Post Sep-29-2008 21:30 
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cammaxwell
Supreme tranceaddict



Registered: Mar 2007
Location: Toronto, Canada

sorry, I read the question wrong...

one peice is 220g (60%)

one peice is 180g (40%)


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Old Post Sep-29-2008 21:39  Canada
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ChemEnhanced
ƒ¶ƒåƒÓƒÛƒnƒéƒßƒåƒnƒÚƒÕƒÞƒ



Registered: Mar 2005
Location: Milton, ON Canada

my head is going to explode.


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Last edited by Moral Hazard on Apr-26-2011 at 07:48

Old Post Sep-29-2008 21:43  Canada
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VDub
Scoundrel



Registered: Feb 2008
Location: Toronto

quote:
Originally posted by cammaxwell
sorry, I read the question wrong...

one peice is 220g (60%)

one peice is 180g (40%)


no...you're reading it wrong...

The 60 and 40% are the copper content of the original 2 pieces...

When they are melted, the resulting piece is 51% copper...


___________________
quote:
Originally posted by chinamon
chinamon is INCH MOAN.
LOL so fitting.

Old Post Sep-29-2008 21:44 
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VDub
Scoundrel



Registered: Feb 2008
Location: Toronto

quote:
Originally posted by ChemEnhanced
my head is going to explode.


I'm glad ppl are feeling like I did last night with this problem....


___________________
quote:
Originally posted by chinamon
chinamon is INCH MOAN.
LOL so fitting.

Old Post Sep-29-2008 21:45 
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cammaxwell
Supreme tranceaddict



Registered: Mar 2007
Location: Toronto, Canada

quote:
Originally posted by cammaxwell
sorry, I read the question wrong...

one peice is 220g (60%)

one peice is 180g (40%)


400g x 51% = 204g of copper so...

2 pieces, one 220g and one 180g (220+180=400)

220g x 60% = 132g of copper

180g x 40% = 72g of cooper

132g + 72g = 204g of copper OR 51% of the 400g chunk


___________________
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Old Post Sep-29-2008 21:48  Canada
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TranceAddict Forums > Local Scene Info / Discussion / EDM Event Listings > Canada > Canada - Toronto & Southern Ont. > Math Question...
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