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

This topic has 1 expert reply and 0 member replies
jjjinapinch Senior | Next Rank: 100 Posts Default Avatar
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24 Jul 2017
Posted:
83 messages

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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