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30 Mar 2016, 03:54
Kudos
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B
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Difficulty:
5%
(low)
Question Stats:
91% (00:27) correct
9%
(00:48)
wrong
based on 161
sessions
History
Date
Time
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Not Attempted Yet
If x and y are integers, is 5x + y divisible by 5?
(1) x is divisible by 5.
(2) y is divisible by 5.
(1) x is divisible by 5.
(2) y is divisible by 5.
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
31 Mar 2016, 21:38
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Bunuel
Is 5x + y divisible by 5?
We know that 5x is divisible by 5.
Hence the question remains - Is y divisible by 5?
Statement 1:
This does not tell us anything about y.
Hence Insufficient
Statement 2:
This tells us that y is divisible by 5
Hence 5x + y is divisible by 5
Sufficient.
Correct option: B
26 Jun 2018, 18:20
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Bunuel
Since 5x is divisible by 5 regardless what integer x is, then the question becomes: is integer y divisible by 5?
Statement One Alone:
x is divisible by 5.
This does not tell us anything about y. Statement one alone is not sufficient.
Statement Two Alone:
y is divisible by 5.
Since we now know that y is divisible by 5, then 5x + y IS divisible by 5. Statement two alone is sufficient.
Answer: B
