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29 Aug 2018, 02:21
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
80% (01:46) correct
20%
(01:45)
wrong
based on 59
sessions
History
Date
Time
Result
Not Attempted Yet
If in the figure above OR = 5, what is the length of QR?
(1) The measure of angle QOR = 60.
(2) The area of the triangle POR is 25.
Attachment:
image002.jpg [ 4.97 KiB | Viewed 2404 times ]
29 Aug 2018, 02:29
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Bunuel
(1) The measure of angle QOR = 60.
It means QOR=ROQ=OQR=60=equilateral triangle QR=5
sufficient.
(2) The area of the triangle POR is 25.
area = b*h/2
no b , no h
insufficient.
A
Chethan92
Joined: 18 Jul 2018
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Location: India
Concentration: Operations, General Management
Schools: IIMB EPGP'22 (M)
GMAT 1: 590 Q46 V25
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29 Aug 2018, 02:32
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External Angle = Sum of the two interior Angles.
Angle OPQ + Anlge POQ = Angle OQR = 60.
30 + Angle POQ = 60
Angle POQ = 30.
From statement 1:
Given Angle QOR = 60. Means Angle POR is 90.
Then Angle ORP becomes 60.
OQR becomes equilateral triangle.
Then OR = QR = 5.
Sufficient.
From 2:
No idea about other angles.
Insufficient.
A is the answer.
Angle OPQ + Anlge POQ = Angle OQR = 60.
30 + Angle POQ = 60
Angle POQ = 30.
From statement 1:
Given Angle QOR = 60. Means Angle POR is 90.
Then Angle ORP becomes 60.
OQR becomes equilateral triangle.
Then OR = QR = 5.
Sufficient.
From 2:
No idea about other angles.
Insufficient.
A is the answer.
