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# What is the radius of the circle above with center O?

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What is the radius of the circle above with center O? [#permalink]

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26 Jan 2014, 10:42
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The Official Guide For GMAT® Quantitative Review, 2ND Edition

Attachment:

Untitled.png [ 22.3 KiB | Viewed 7179 times ]
What is the radius of the circle above with center O?

(1) The ratio of OP to PQ is 1 to 2.

(2) P is the midpoint of chord AB.

Data Sufficiency
Question: 58
Category: Geometry Circles
Page: 157
Difficulty: 600

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Re: What is the radius of the circle above with center O? [#permalink]

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26 Jan 2014, 10:42
SOLUTION

What is the radius of the circle above with center O?

(1) The ratio of OP to PQ is 1 to 2.

(2) P is the midpoint of chord AB.

The answer to this question is straight E. Even when we consider the statements together we only have the ratios, not absolute values of any line segment.

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Re: What is the radius of the circle above with center O? [#permalink]

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26 Jan 2014, 11:42
1
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Bunuel wrote:
The Official Guide For GMAT® Quantitative Review, 2ND Edition

Attachment:
Untitled.png
What is the radius of the circle above with center O?

(1) The ratio of OP to PQ is 1 to 2.

(2) P is the midpoint of chord AB.

Questions asks the absolute value and none of the options gives an absolute value (Both of them gives ratios).

hence Option E)
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Re: What is the radius of the circle above with center O? [#permalink]

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26 Jan 2014, 23:34
From S1:OP:PQ=1:2
OQ=radius.It's not possible to calculate a single value for rad based on ratio.Insufficient
From S2:P=midpt of chord AB
Again this implies triangles OAP & OQP are congruent but gives no unique value can be calculated based on this.Insufficient.
Combining the two,we do get any absolute value for radius.
Ans.E

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Re: What is the radius of the circle above with center O? [#permalink]

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28 Jan 2014, 02:52
Statement (1) says PQ= 2OP, giving multiple values for the radius. Insufficient

Statement (2) has no relationship with the radius whatsoever, hence Insufficient

Together, (1) and (2) are clearly not sufficient.

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Re: What is the radius of the circle above with center O? [#permalink]

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01 Feb 2014, 09:22
Expert's post
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SOLUTION

What is the radius of the circle above with center O?

(1) The ratio of OP to PQ is 1 to 2.

(2) P is the midpoint of chord AB.

The answer to this question is straight E. Even when we consider the statements together we only have the ratios, not absolute values of any line segment.

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Re: What is the radius of the circle above with center O? [#permalink]

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25 May 2014, 15:23
Bunuel wrote:
SOLUTION

What is the radius of the circle above with center O?

(1) The ratio of OP to PQ is 1 to 2.

(2) P is the midpoint of chord AB.

The answer to this question is straight E. Even when we consider the statements together we only have the ratios, not absolute values of any line segment.

Hi Bunuel,

Would anything have changed if they either A) Provided the area of QPB or B) If they mentioned that the AB was the radius and it was cut in half?

My guess is that if they provided the area, we could get the value of AQB and equate the earlier ratio of OP to PQ. This would give us the diameter essentially and we could get the radius from that. Is that correct?

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Re: What is the radius of the circle above with center O? [#permalink]

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17 Oct 2014, 16:10
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It took me 18 seconds to choose E, but it took me 1:18 to finally click E as I keep wondering, is it that easy??

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Re: What is the radius of the circle above with center O? [#permalink]

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05 Mar 2016, 10:47
Hello from the GMAT Club BumpBot!

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Re: What is the radius of the circle above with center O? [#permalink]

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28 Apr 2016, 14:32
Statement 1 gives a ratio so clearly insufficient
Statement 2 gives information that can already be inferred from the question stem so clearly insufficient
combining we don't get any new information
clearly the correct answer is option - E

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Re: What is the radius of the circle above with center O? [#permalink]

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08 Jun 2017, 14:25
Hello from the GMAT Club BumpBot!

Thanks to another GMAT 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).

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Re: What is the radius of the circle above with center O?   [#permalink] 08 Jun 2017, 14:25
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# What is the radius of the circle above with center O?

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