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10y=5 and z^4=81
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sandy
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Joined: 07 Jun 2014
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GRE 1: Q167 V156
WE:Business Development (Energy and Utilities)
10y=5 and z^4=81 [#permalink] New post  15 May 2018, 16:13
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\(\frac{10}{y} = 5\)

\(z^4=81\)

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.
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Amit1997
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Re: 10y=5 and z^4=81 [#permalink] New post  07 Jul 2018, 21:39
Questions is not clear!
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sandy
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Joined: 07 Jun 2014
Posts: 4805
GRE 1: Q167 V156
WE:Business Development (Energy and Utilities)
Re: 10y=5 and z^4=81 [#permalink] New post  08 Jul 2018, 00:45
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Amit1997 wrote:
Questions is not clear!

Sorry about that fixed it!
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leanhdung
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Re: 10y=5 and z^4=81 [#permalink] New post  09 Jul 2018, 02:06
1
\(10/y=5 ->\) \(y=2\)
\(z^4=81->\) \(z=3\) or \(z=-3\)
-> D.
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kruttikaaggarwal
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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
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