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

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Math Expert
Joined: 02 Sep 2009
Posts: 53066
What is the radius of the circle above with center O?  [#permalink]

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05 Sep 2018, 22:43
00:00

Difficulty:

35% (medium)

Question Stats:

77% (01:15) correct 23% (02:28) wrong based on 20 sessions

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

(1) The ratio of OP to PQ is 3 to 1.
(2) The ratio of AQ to AB is 2 to 1.

Attachment:

image002.gif [ 1.98 KiB | Viewed 285 times ]

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Math Expert
Joined: 02 Aug 2009
Posts: 7334
Re: What is the radius of the circle above with center O?  [#permalink]

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05 Sep 2018, 23:04
1
1
Bunuel wrote:

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

(1) The ratio of OP to PQ is 3 to 1.
(2) The ratio of AQ to AB is 2 to 1.

Attachment:
image002.gif

In such questions, think if you can make a unique figure
here can we make a unique circle..... NO
we can just zoom this circle and the ratios will remain the same

Also we just have ratios from the two statements, these will not give us a numeric value..

E
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1) Absolute modulus : http://gmatclub.com/forum/absolute-modulus-a-better-understanding-210849.html#p1622372
2)Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html
3) effects of arithmetic operations : https://gmatclub.com/forum/effects-of-arithmetic-operations-on-fractions-269413.html
4) Base while finding % increase and % decrease : https://gmatclub.com/forum/percentage-increase-decrease-what-should-be-the-denominator-287528.html

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

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05 Sep 2018, 23:31
Answer choice E has to be the correct one as both option only provide ratio, no actual length of any line is provided in question, even length of any one of line would might have helped to find the answer and question more difficult.
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Re: What is the radius of the circle above with center O?   [#permalink] 05 Sep 2018, 23:31
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