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01 Feb 2020, 19:25
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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:
65%
(hard)
Question Stats:
46% (01:36) correct
54%
(01:20)
wrong
based on 114
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GMATBusters’ Quant Quiz Question -4
For questions from previous quizzes click here
If y/x = 3, Is x a factor of y?
1) x is even
2) x > 0
01 Feb 2020, 19:26
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The Official Solution is as follows:
WhatsApp Image 2020-02-03 at 6.49.55 PM (3).jpeg [ 60.88 KiB | Viewed 2366 times ]
Attachment:
WhatsApp Image 2020-02-03 at 6.49.55 PM (3).jpeg [ 60.88 KiB | Viewed 2366 times ]
General Discussion
01 Feb 2020, 19:44
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If y/x = 3, Is x a factor of y?
1) x is even
2) x > 0
Given: y/x = 3 , y=3x
A) X is even
If x is 2 , then y=3x , substitute x in the equation and we get y = 3(2) , y = 6. This give x is a factor of y.
If x is 0.4, then y=3(0.4), y = 1.2 , This also gives X (0.4) is a factor of Y (1.2)
Option A is sufficient.
B) x > 0
This says X is a non negative number. We have already considered an even number x=2 in option A. Even if we consider X as negative number, X is a factor of Y.
Option B is sufficient.
Ans: D
1) x is even
2) x > 0
Given: y/x = 3 , y=3x
A) X is even
If x is 2 , then y=3x , substitute x in the equation and we get y = 3(2) , y = 6. This give x is a factor of y.
If x is 0.4, then y=3(0.4), y = 1.2 , This also gives X (0.4) is a factor of Y (1.2)
Option A is sufficient.
B) x > 0
This says X is a non negative number. We have already considered an even number x=2 in option A. Even if we consider X as negative number, X is a factor of Y.
Option B is sufficient.
Ans: D
