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If r = 5z then 15z = 3y, then r =

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Math Expert
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V
Joined: 02 Sep 2009
Posts: 57279
If r = 5z then 15z = 3y, then r =  [#permalink]

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New post 08 Aug 2019, 01:40
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

100% (00:39) correct 0% (00:00) wrong based on 26 sessions

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S
Joined: 18 Dec 2017
Posts: 173
Re: If r = 5z then 15z = 3y, then r =  [#permalink]

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New post 08 Aug 2019, 16:26
Bunuel wrote:
If r = 5z then 15z = 3y, then r =

A. y
B. 2 y
C. 5 y
D. 10 y
E. 15 y


since 5z and 15z have 5 in common, consider multiplying r=5z with 3. You get 3r=15z.
Which means 3r=3y. Leading us to r=y.
Hence A
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Re: If r = 5z then 15z = 3y, then r =   [#permalink] 08 Aug 2019, 16:26
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If r = 5z then 15z = 3y, then r =

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