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In the figure shown, what is the value of z?

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In the figure shown, what is the value of z?  [#permalink]

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New post 21 Mar 2018, 05:09
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

83% (01:22) correct 17% (02:28) wrong based on 56 sessions

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Re: In the figure shown, what is the value of z?  [#permalink]

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New post 21 Mar 2018, 05:34
y=88
the angles of triangle = 54,82, z

angles in a triangle = 180 and a unique value can be found

B sufficient

m=n

we know x=z

insufficient

(B) imo
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Re: In the figure shown, what is the value of z?  [#permalink]

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New post 21 Mar 2018, 05:39
St1: clearly insufficient, as we don't have any information except m=n and a angle.
St2: as per exterior angle theorem,y =54+z. And y =88 as per statement 2.so z can be found as 34. Sufficient.
Answer B

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Re: In the figure shown, what is the value of z?  [#permalink]

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New post 22 Mar 2018, 05:28
from st 1) m=n which makes x=z ,value of z cant be calculated
st 2) y=88 now if we consider the triangle on the right side then y is the external angle
so y= 54 + x
x=34
so st 2 is sufficient.
Hence B
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Re: In the figure shown, what is the value of z? &nbs [#permalink] 22 Mar 2018, 05:28
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In the figure shown, what is the value of z?

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