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13 Feb 2019, 10:06
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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:
79% (00:35) correct
21%
(00:48)
wrong
based on 91
sessions
History
Date
Time
Result
Not Attempted Yet
What is the value of \(m − 3n\)?
(1) \(\frac{m}{2}\) - 8 = \(\frac{3n}{2}\)
(2) \(m\) = 10
(1) \(\frac{m}{2}\) - 8 = \(\frac{3n}{2}\)
(2) \(m\) = 10
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
13 Feb 2019, 10:12
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CAMANISHPARMAR
we are looking for m - 3n.
Statement 1: \(\frac{m}{2}\) - 8 = \(\frac{3n}{2}\)
\(\frac{m}{2}\) - \(\frac{3n}{2}\) = 8
\(\frac{m - 3n}{2}\)= 8
m - 3n = 16.
Sufficient.
Statement 2 : m = 10. clearly NOT sufficient. we don't know the value of n.
A is the correct answer.
14 Feb 2019, 00:02
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Solution
To find:
- • The value of the expression m – 3n
Analysing Statement 1
As per the information given in statement 1, \(\frac{m}{2} – 8 = \frac{3n}{2}\)
We can write this expression as:
- • \(\frac{m}{2} – 8 = \frac{3n}{2}\)
Or, \(\frac{m}{2} – \frac{3n}{2} = 8\)
Or, m – 3n = 8 x 2 = 16
Hence, statement 1 is sufficient to answer the question.
Analysing Statement 2
As per the information given in statement 2, m = 10.
- • However, from this statement, we cannot infer any information about the value of n.
Hence, statement 2 is not sufficient to answer the question.
Hence, the correct answer is option A.
Answer: A
