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If y = 4x

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If y = 4x [#permalink] New post 23 Mar 2018, 03:52
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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

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Re: If y = 4x [#permalink] New post 25 Mar 2018, 22:35
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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.
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Re: If y = 4x [#permalink] New post 26 Mar 2018, 12:39
Expert's post
No, you are right.

The answer is 6x, so indeed B.

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