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If y ≠ 2xz, what is the value of (2xz + yz

This topic has 2 expert replies and 0 member replies
jjjinapinch Senior | Next Rank: 100 Posts Default Avatar
Joined
24 Jul 2017
Posted:
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If y ≠ 2xz, what is the value of (2xz + yz

Post Thu Aug 03, 2017 12:03 pm
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    If y ≠ 2xz, what is the value of (2xz + yz)/(2xz - y)?
    1) 2x + y = 3
    2) z = 2

    Official Guide question
    Answer: E

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    Post Thu Aug 03, 2017 9:28 pm
    jjjinapinch wrote:
    If y ≠ 2xz, what is the value of (2xz + yz)/(2xz - y)?
    1) 2x + y = 3
    2) z = 2

    Official Guide question
    Answer: E
    Given: y ≠ 2xz

    To get: Value of (2xz + yz)/(2xz - y)

    = (2xz + yz)/(2xz - y) = z(2x + y)/(2xz - y)

    Statement 1: 2x + y = 3

    => z(2x + y)/(2xz - y) = 3z/(2xz - y).

    We do not have the value of z and (2xz - y). Insufficient.

    Statement 1: z = 2

    => z(2x + y)/(2xz - y) = 2(2x + y)/(4x - y).

    We do not have the value of (2x + y) and (4x - y). Insufficient.

    Statement 1 & 2:

    z(2x + y)/(2xz - y) = 2*3/(4x - y) = 6/(4x - y).

    We do not have the value of (4x - y). Insufficient.

    The correct answer: E

    Hope this helps!

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    Post Fri Dec 08, 2017 7:19 am
    jjjinapinch wrote:
    If y ≠ 2xz, what is the value of (2xz + yz)/(2xz - y)?
    1) 2x + y = 3
    2) z = 2
    We can start by simplifying the question:

    (2xz + yz)/(2xz - y) = ?

    z(2x + y)/(2xz - y) = ?

    Statement One Alone:

    2x + y = 3

    Although statement one provides a value for 2x + y, we still do not have a value for z or 2xz -y. Thus, statement one alone is not sufficient to answer the question. We can eliminate answer choices A and D.

    Statement Two Alone

    z = 2

    Although statement two provides a value for z, we still do not have a value for 2xz - y or 2x + y. Thus, statement two alone is not sufficient to answer the question. We can eliminate answer choice B.

    Statements One and Two Together:

    Using statements one and two, we have values for z and 2x + y. However, since we still do not have a value for 2xz - y, we do not have enough information to answer the question.

    Answer: E

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