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Moderator  Joined: 18 Apr 2015
Posts: 5919
Followers: 96

Kudos [?]: 1159 , given: 5501

If y = 4x [#permalink]
Expert's post 00:00

Question Stats: 50% (00:20) correct 50% (00:11) wrong based on 4 sessions
If $$y = 4x$$ and $$z = \frac{1}{2} y$$, the in terms of x, $$y + z =$$

A. 4.5x

B. 6x

C. 7x

D. 9x

E. 11x
[Reveal] Spoiler: OA

_________________ Manager Joined: 27 Sep 2017
Posts: 112
Followers: 1

Kudos [?]: 30  , given: 4

Re: If y = 4x [#permalink]
1
KUDOS
Carcass wrote:
If $$y = 4x$$ and $$z = \frac{1}{2} y$$, the in terms of x, $$y + z =$$

A. 4.5x

B. 6x

C. 7x

D. 9x

E. 11x

Can you check the ans of the question, I thought the ans should be B not C?

y= 4x

$$z = \frac{1}{2} y$$ which means z= 2x

Then, in terms of x, y+z= 6x

UNLESS, you have a typo. And, you want to ask x+y+z which is 7x.

So please check it out, thanks.
Moderator  Joined: 18 Apr 2015
Posts: 5919
Followers: 96

Kudos [?]: 1159 , given: 5501

Re: If y = 4x [#permalink]
Expert's post
No, you are right.

The answer is 6x, so indeed B.

Regards
_________________ Re: If y = 4x   [#permalink] 26 Mar 2018, 12:39
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