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The equation M+6/36 =P-7/21 relates two temperature scales,

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The equation M+6/36 =P-7/21 relates two temperature scales, [#permalink] New post 11 Jun 2005, 08:32
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E

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The equation M+6/36 =P-7/21 relates two temperature scales, where M is the number of degrees on one scale and P is the number of degrees on the other scale. Which of the following equations can be used to convert temperatures from the P scale to the M scale?
(A) M=7/12P+13
(B) M=7/12P+21
(C) M=7/12P-12
(D) M=7/12P-13
(E) M=7/12P-18
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Re: PS TEMPERATURES [#permalink] New post 11 Jun 2005, 08:57
mandy wrote:
:) Hello

does anyone has a clue on that one thanks
The equation M+6/36 =P-7/21 relates two temperature scales, where M is the number of degrees on one scale and P is the number of degrees on the other scale. Which of the following equations can be used to convert temperatures from the P scale to the M scale?
(A) M=7/12P+13
(B) M=7/12P+21
(C) M=7/12P-12
(D) M=7/12P-13
(E) M=7/12P-18


Mandy I got M + 1/6 = P - 1/3
M = P -1/3 - 1/6
M = P - 1/2.

which does not match any of the choices !

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Re: PS TEMPERATURES [#permalink] New post 11 Jun 2005, 12:12
mandy wrote:
:) Hello

does anyone has a clue on that one thanks
The equation M+6/36 =P-7/21 relates two temperature scales, where M is the number of degrees on one scale and P is the number of degrees on the other scale. Which of the following equations can be used to convert temperatures from the P scale to the M scale?
(A) M=7/12P+13
(B) M=7/12P+21
(C) M=7/12P-12
(D) M=7/12P-13
(E) M=7/12P-18


there must be a mistake in M+6/36 =P-7/21, maybe either + or - shoul be
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 [#permalink] New post 11 Jun 2005, 12:40
Umm...was it meant to be (M+6)/36=(P-7)/21 by any chance?
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 [#permalink] New post 11 Jun 2005, 16:14
:?
I solved M+6/36=p-7/21
I found M= 12/7p-18 Which does not also match any answers
By guessing i would go for E
The right answer is E But i don't have 7/12
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 [#permalink] New post 11 Jun 2005, 19:52
Correct question should be (M+6)/36 =(P-7)/21.

Correct answer should be M=(12/7)P-18.
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  [#permalink] 11 Jun 2005, 19:52
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The equation M+6/36 =P-7/21 relates two temperature scales,

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