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04 Apr 2017, 00:22
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22%
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If 1.8x + 2.7y = 12.6, what is the value of x?
(1) x and y are integers.
(2) y = 4
(1) x and y are integers.
(2) y = 4
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04 Apr 2017, 04:25
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Bunuel
If 1.8x + 2.7y = 12.6, what is the value of x?
(1) x and y are integers.
(2) y = 4
(1) x and y are integers.
(2) y = 4
1.8x + 2.7y = 12.6 ==> 18x + 27y = 126 ==> 2x + 3y = 14
St I
x and y are integers
we can have, x=1 and y=4 or x=4 and y=2 -----------Insufficient
St II
y=4
2x + 3y = 14
2x = 14 - 12 = 2
x = 1 -----------Sufficient
Hence option B is correct
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05 Apr 2017, 09:13
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1 is insuffficient as x or y could be an integer
2 is sufficient because we are able to find out what x is.
The answer is B
2 is sufficient because we are able to find out what x is.
The answer is B
