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10y=5 and z^4=81

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GMAT Club Legend
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Joined: 07 Jun 2014
Posts: 4710
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
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10y=5 and z^4=81 [#permalink] New post 15 May 2018, 16:13
Expert's post
00:00

Question Stats:

60% (00:20) correct 40% (00:19) wrong based on 15 sessions
\(\frac{10}{y} = 5\)

\(z^4=81\)

Quantity A
Quantity B
\(z\)
\(y\)


A. Quantity A is greater.
B. Quantity B is greater.
C. The two quantities are equal.
D. The relationship cannot be determined from the information given.
[Reveal] Spoiler: OA

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Re: 10y=5 and z^4=81 [#permalink] New post 07 Jul 2018, 21:39
Questions is not clear!
GMAT Club Legend
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Joined: 07 Jun 2014
Posts: 4710
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
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Kudos [?]: 1612 [0], given: 375

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Re: 10y=5 and z^4=81 [#permalink] New post 08 Jul 2018, 00:45
Expert's post
Amit1997 wrote:
Questions is not clear!

Sorry about that fixed it!
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Re: 10y=5 and z^4=81 [#permalink] New post 09 Jul 2018, 02:06
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\(10/y=5 ->\) \(y=2\)
\(z^4=81->\) \(z=3\) or \(z=-3\)
-> D.
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Re: 10y=5 and z^4=81 [#permalink] New post 05 Aug 2018, 16:20
y=10/5=2
z=+3 or -3
Re: 10y=5 and z^4=81   [#permalink] 05 Aug 2018, 16:20
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10y=5 and z^4=81

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