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30 May 2016, 13:51
Kudos
Bookmarks
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
35%
(medium)
Question Stats:
67% (01:42) correct
33%
(01:26)
wrong
based on 84
sessions
History
Date
Time
Result
Not Attempted Yet
Does s = 5 - t ?
(1) t = 17 - 4s
(2) s = 8 - 4t
(1) t = 17 - 4s
(2) s = 8 - 4t
Pure algebraic questions like this one are no longer part of the GMAT Data Sufficiency syllabus.
For relevant Data Sufficiency questions, please check the Data Sufficiency forum:
Data Sufficiency Forum
Data Sufficiency Forum
30 May 2016, 20:55
Kudos
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s = 5 - t
=> s+t = 5
(1) t = 17 - 4s
=>t+4s = 17
Not sufficient
(2) s = 8 - 4t
=> s+4t = 8
Not sufficient
Adding 1 and 2 , we get
5(s+t) = 25
=>s+t = 5
Answer C
=> s+t = 5
(1) t = 17 - 4s
=>t+4s = 17
Not sufficient
(2) s = 8 - 4t
=> s+4t = 8
Not sufficient
Adding 1 and 2 , we get
5(s+t) = 25
=>s+t = 5
Answer C
30 May 2016, 22:21
Kudos
Bookmarks
Bunuel
Statement 1
t = 17-4s
s+t = 17-4s+s = 17-3s. We do not know whether 17-3s = 5. so Not sufficient.
Statement 2
s = 8-4t
s+t = 8-3t We do not know whether 8-3t = 5. so Not sufficient.
Combining Statements 1 and 2
t = 17 - 4s
s = 8 - 4t
s = 8 - 4 (17-4s) = 8 - 68+16s= 16s -60
15s = 60; s = 4.
t = 17-4s = 17 - 4*4 = 1
s+t = 5
Sufficient
Answer is C.
