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Mixture

 
 
Reply Wed 12 Feb, 2014 04:17 pm
A merchant receives two square cases ( different sizes) of green tea (larger case) and black tea (smaller case). The teas are mixed to fill twenty two square chests of equal size. Calculate proportions of green to black tea. Thanks.
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Type: Question • Score: 0 • Views: 685 • Replies: 9
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Jack of Hearts
 
  1  
Reply Wed 12 Feb, 2014 04:55 pm
@Randy Dandy,

I would imagine the proportion equals the ratio of size between the two cases. The chests are 1/22 of each case.
ekename
 
  1  
Reply Wed 12 Feb, 2014 10:54 pm
@Randy Dandy,
16:6, although the problem was admittedly waring.

http://en.wikipedia.org/wiki/Cube_(algebra)
Randy Dandy
 
  1  
Reply Wed 12 Feb, 2014 11:38 pm
@ekename,
ekename,

Please show your solution. Thanks.

Randy Dandy
ekename
 
  1  
Reply Wed 12 Feb, 2014 11:46 pm
@Randy Dandy,
I guessed, japing the name of an eminent mathematician and occasional cubist then posted a spurious attribution to lend credence to my otherwise obfuscatory obtuseness.
0 Replies
 
fresco
 
  2  
Reply Thu 13 Feb, 2014 01:03 am
@Randy Dandy,
If you don't have the common courtesy to respond to answers to your first question, don't expect an answer to this one.
Randy Dandy
 
  1  
Reply Thu 13 Feb, 2014 08:09 am
@Jack of Hearts,
Thank you.
0 Replies
 
Randy Dandy
 
  1  
Reply Thu 13 Feb, 2014 08:11 am
@fresco,
I apologize for my error. Thanks for replying to my question.
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ekename
 
  1  
Reply Thu 13 Feb, 2014 09:01 pm
@Randy Dandy,
Quote:
Please show your solution. Thanks.


The solution isn't so much a formula as the realisation that the equation x^3 + y^3 = 22.z^3
is constrained by the condition that the answer is the sum of variants of 2 sets of cubes.

Main article: Waring's problem

Every positive integer can be written as the sum of nine (or fewer) positive cubes. This upper limit of nine cubes cannot be reduced because, for example, 23 cannot be written as the sum of fewer than nine positive cubes:
23 = 2^3 + 2^3 + 1^3 + 1^3 + 1^3 + 1^3 + 1^3 + 1^3 + 1^3.


Main article: Fermat's last theorem

The equation x^3 + y^3 = z^3 has no non-trivial (i.e. xyz ≠ 0) solutions in integers. In fact, it has none in Eisenstein integers.[1]

Both of these statements are also true for the equation[2] x^3 + y^3 = 3z^3.


http://en.wikipedia.org/wiki/Cube_(algebra)
Randy Dandy
 
  1  
Reply Fri 14 Feb, 2014 01:01 am
@ekename,
Thanks ekename
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