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If 4x=5y=10z, what is the value of x+y+z 1) x-y=6 2) y+z=36

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If 4x=5y=10z, what is the value of x+y+z 1) x-y=6 2) y+z=36 [#permalink] New post 04 Jun 2006, 03:34
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If 4x=5y=10z, what is the value of x+y+z

1) x-y=6
2) y+z=36
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Re: GMAT paper test - DS # 1 [#permalink] New post 04 Jun 2006, 11:32
SimaQ wrote:
How did you solve it?


4x=5y=10z => if we take 4x=5y than x=5y/4 thus by subst. (1) we have 5y/4-y=6

similarly for (2)
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 [#permalink] New post 04 Jun 2006, 23:47
All right... thanx. OA is D.
  [#permalink] 04 Jun 2006, 23:47
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If 4x=5y=10z, what is the value of x+y+z 1) x-y=6 2) y+z=36

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