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A number is to be written in each of the small squares in the figure
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23 May 2020, 08:36
23 May 2020, 08:36
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Difficulty:
35%
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Question Stats:
67% (01:31) correct
33%
(01:34)
wrong
based on 554
sessions
A number is to be written in each of the small squares in the figure above so that the sum of the numbers in any row is the same as the sum of the numbers in any column: What number does x represent?
(1) z represents 5.
(2) y represents 8.
DS20400
Attachment:
1.png [ 3.24 KiB | Viewed 8392 times ]
Re: A number is to be written in each of the small squares in the figure
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23 May 2020, 08:58
23 May 2020, 08:58
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Bunuel wrote:
A number is to be written in each of the small squares in the figure above so that the sum of the numbers in any row is the same as the sum of the number s in any column: What number does x represent?
(1) z represents 5.
(2) y represents 8.
DS20400
Attachment:
1.png
(1) z represents 5.
\(4+5+y=9+x+y\)
\(9+y=9+x+y\)
\(x=0\)
Sufficient
(2) y represents 8.
\(4+8+z=9+8+x\)
\(12+z=17+x\)
\(z=5+x\)
Not sufficient
Answer A
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Re: A number is to be written in each of the small squares in the figure
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24 May 2020, 01:15
24 May 2020, 01:15
Bunuel wrote:
A number is to be written in each of the small squares in the figure above so that the sum of the numbers in any row is the same as the sum of the number s in any column: What number does x represent?
(1) z represents 5.
(2) y represents 8.
DS20400
Attachment:
1.png
Given: 9+ x + y = 4 + y + z
Statement 1: z represents 5.
=> 9+ x + y = 4 + y + z
=> 9 + x + y = 9 + y
=> x = 0.
Sufficient.
Statement 2: y represents 8.
9 + x + 8 = 4 + 8 + z.
1 equation, 2 unknowns, thus Insufficient.
Answer A.
