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In the figure above, what is the value of b?

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In the figure above, what is the value of b?  [#permalink]

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New post 03 Jan 2016, 11:46
1
3
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

63% (01:43) correct 37% (01:39) wrong based on 151 sessions

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Senior Manager
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Concentration: Strategy, General Management
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Re: In the figure above, what is the value of b?  [#permalink]

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New post 05 Jan 2016, 19:04
[quote="Bunuel"]Image
In the figure above, what is the value of b?

(1) a + c + d = 225
c+d=180
d=45
c=135
insufficient

(2) -(d – a = 55)
c+d=180
a+c=125

180-125=55
sufficient

Answer:B
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Re: In the figure above, what is the value of b?  [#permalink]

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New post 24 Jan 2016, 11:40
1
St 1:
a+c+d= 225
a+180 = 225
a= 45

Insufficient

St 2:
d- a = 55
a+b = d
b= d-a
b=55

Sufficient

Ans:B
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Re: In the figure above, what is the value of b?  [#permalink]

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New post 23 Feb 2016, 19:28
Bunuel wrote:
Image
In the figure above, what is the value of b?

(1) a + c + d = 225
(2) d – a = 55

Attachment:
2016-01-03_2244.png


we know a+b+c=180
b+d=180

1 - a+180=225 -> we can find a, but not b.
2 - d=55+a
d=180-c
55+a=180-c
c=180-55-a
c=125-a

now:
a+b+125-a=180
b+125=180
b=55

statement 2 alone is sufficient
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Re: In the figure above, what is the value of b?  [#permalink]

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New post 20 Dec 2018, 05:23
Image
Question In the figure above, what is the value of b?

Statement (1): a + c + d = 225
-> c+d = 180
-> a = 225- 180 = 45.

But we can't calculate he value of b..
as b = 180-a -c
NOT SUFFICIENT

Statement (2): d – a = 55
a + b = d
So, d-a = b = 55
SUFFICIENT
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Re: In the figure above, what is the value of b?   [#permalink] 20 Dec 2018, 05:23
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