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Sub 505 (Easy)|   Algebra|      
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Bunuel
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The average of x, y, and z is 40. What is x? (1) y = 2z (2) y + z = 75 21 Apr 2017, 00:05
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

5% (low)

Question Stats:

88% (00:37) correct 12% (01:03) wrong based on 56 sessions

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The average of x, y, and z is 40. What is x?

(1) y = 2z
(2) y + z = 75
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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
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Shiv2016
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The average of x, y, and z is 40. What is x? (1) y = 2z (2) y + z = 75 21 Apr 2017, 00:52
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Statement 2 is sufficient.

x+y+z= 40*3= 120

1) x+3z=120

Not sufficient

2) x+75=120

Sufficient
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Bunuel
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