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21 Sep 2018, 01:38
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B
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:
73% (00:41) correct
27%
(00:54)
wrong
based on 69
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If y ≠ 0, what is the value of \((\frac{5x}{y})^2\)?
(1) x = 3
(2) 5x − 2y = 0
(1) x = 3
(2) 5x − 2y = 0
21 Sep 2018, 01:52
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Bunuel
Statement 1: x =3. No information about y. NOT sufficient.
Statement 2:
5x - 2y = 0
5x = 2y
x / y = 2/5.
Question :\((5x /y)^2 = (5*x/y)^2 = (5*2/5)^2 = 4.\)
Sufficient .
The best answer is B.
22 Sep 2018, 03:33
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Solution
Given:
- • The value of y ≠ 0
To find:
- • Value of the expression \((\frac{5x}{y})^2\)
Analysing Statement 1
From the information given in statement 1, x = 3.
- • From this statement, we don’t have any information about the value of y.
Hence, statement 1 is not sufficient.
Analysing Statement 2
From the information given in statement 2, 5x – 2y = 0
- • Or, 5x = 2y
• Or, \(\frac{5x}{y}\) = 2
Therefore, we can find the value of \((\frac{5x}{y})^2\).
Hence, statement 2 is sufficient.
The correct answer is option B.
Answer: B
