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23 Aug 2016, 02:36
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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:
15%
(low)
Question Stats:
84% (01:18) correct
16%
(00:59)
wrong
based on 56
sessions
History
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Not Attempted Yet
If q + r + s = 45, what is the value of qr?
(1) q = r = s
(2) q − r − s = −15
(1) q = r = s
(2) q − r − s = −15
23 Aug 2016, 03:42
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Bunuel
Given q + r + s = 45.
Stat 1: q = r = s then we get 15 each...then rq is 225...Sufficient.
Stat 2: q − r − s = −15 => q+15 = r+s
=> From question stem we get q+15 = 45 -q => 2q = 30 => q = 15.
30 = r+s here we are not sure exactly about the value of r...Insufficient.
IMO option A is correct answer...
OA please...will correct if I missed anything..
Senthil1981
Joined: 23 Apr 2015
Last visit: 14 Oct 2021
Posts: 225
Given Kudos: 36
Location: United States
Concentration: General Management, International Business
Schools: Booth PT '19 Ross Weekend"19
WE:Engineering (Consulting)
23 Aug 2016, 12:43
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Bunuel
Consider 1) \(q = r = s\) and this gives \(q = r = s = 15\) and Hence sufficient ,Either A or D
Consider 2)\(q − r − s = −15\), this with \(q + r + s = 45\), gives \(q\) , but not \(r\) and \(s\). Hence Eliminate D
Answer is A
