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17 Nov 2025, 23:43
Kudos
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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% (01:23) correct
33%
(01:27)
wrong
based on 49
sessions
History
Date
Time
Result
Not Attempted Yet
A certain number of people wait in line at a bank until served. How many people are presently in line?
(1) If 2 more people joined the line and none of those currently waiting were served, there would be at least 10 people waiting in line.
(2) If no more people joined the line and 4 of the people currently waiting were served, there would be fewer than 5 people waiting in line.
(1) If 2 more people joined the line and none of those currently waiting were served, there would be at least 10 people waiting in line.
(2) If no more people joined the line and 4 of the people currently waiting were served, there would be fewer than 5 people waiting in line.
18 Nov 2025, 01:46
Kudos
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Let people in line be x.
x = ?
I) x +2 >= 10
X could be anything above 8.
(8,9,10,...)
Not sufficient.
II)
x-4 < 5
Pay attention to the signage.
X anything less than or equal to 8, but bigger than 3 (no negative line).
(8,7,6,5,4)
1+2: Overlap of solutions: 8
C
x = ?
I) x +2 >= 10
X could be anything above 8.
(8,9,10,...)
Not sufficient.
II)
x-4 < 5
Pay attention to the signage.
X anything less than or equal to 8, but bigger than 3 (no negative line).
(8,7,6,5,4)
1+2: Overlap of solutions: 8
C
18 Nov 2025, 11:32
Kudos
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Bunuel
We need to find the number of people present in the line = W = ?
Statement 1:
(1) If 2 more people joined the line and none of those currently waiting were served, there would be at least 10 people waiting in line.
W + 2 >= 10
Thus, W >= 8
W can take any values from 8, 9, 10 ....... and so on.
Hence, Insufficient.
Statement 2:
(2) If no more people joined the line and 4 of the people currently waiting were served, there would be fewer than 5 people waiting in line.
W -4 <5
W < 9
W can be any value from 0 to 9.
Hence, Insufficient.
Combining both Statements 1 and 2, we get
W >= 8 and W <9
There exists a unique value W =8.
Hence, Sufficient.
Option C
