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AB+AD or DC+BC

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Which is greater AB + AD or DC + BC [#permalink] New post   13 Mar 2019, 12:03
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#GREpracticequestion Which is greater AB + AD or DC + BC.jpg
#GREpracticequestion Which is greater AB + AD or DC + BC.jpg [ 14.38 KiB | Viewed 8232 times ]



Quantity A
Quantity B
\(AB + AD\)
\(DC + BC\)


A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
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D
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mohan514
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Re: Which is greater AB + AD or DC + BC [#permalink] New post   15 Mar 2019, 01:25
1
If angle DBC were right angled then both will be equal else we cannot determine.

We cannot conclude based on the image in GRE. Its a trick used to deceive test takers.
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Re: Which is greater AB + AD or DC + BC [#permalink] New post   20 Mar 2019, 09:04
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mohan514 wrote:
If angle DBC were right angled then both will be equal else we cannot determine.

We cannot conclude based on the image in GRE. Its a trick used to deceive test takers.


Even if angle DBC was 90 degrees, the answer would still be D.

For instance, think about Quantity B. The lines DC and BC can be extremely long or extremely short, and it would not change the angle at DBC at all. The same is true of the lines in Quantity A.

Indeed, since the line lengths are not specified, we cannot assume anything about their relative lengths.
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AB+AD or DC+BC [#permalink] New post   07 Nov 2022, 00:32
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Attachment:
GRE AB+AD or DC+BC.jpg
GRE AB+AD or DC+BC.jpg [ 12.04 KiB | Viewed 2870 times ]


Quantity A
Quantity B
AB+AD
DC+BC



A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.


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Re: AB+AD or DC+BC [#permalink] New post   02 Dec 2022, 08:08
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Looking at the question we do not have much of information. we do know just that the angle is 100°

However, nothing about the sides or else

The triangle could look like this

Attachment:
GRE geometry (4).jpg
GRE geometry (4).jpg [ 103.35 KiB | Viewed 2637 times ]


Or

Attachment:
GRE geometry (5).jpg
GRE geometry (5).jpg [ 107.91 KiB | Viewed 2681 times ]


The answer is D
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Re: AB+AD or DC+BC [#permalink] New post   14 Apr 2025, 10:56
Hello from the GRE Prep Club BumpBot!

Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
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Re: AB+AD or DC+BC [#permalink]
14 Apr 2025, 10:56
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