If x > 0, what is the value of x?

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If x > 0, what is the value of x?

by M7MBA » Fri Mar 16, 2018 4:08 am
If x > 0, what is the value of x?

(1) x > 5
(2) 40 - x^2 = 4

The OA is the option B.

Is sufficient the statement (2)? Experts, I need your help. <i class="em em-confused"></i>

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by GMATGuruNY » Fri Mar 16, 2018 4:34 am
M7MBA wrote:If x > 0, what is the value of x?

(1) x > 5
(2) 40 - x^2 = 4
Statement 1:
Since x can be any value greater than 5, INSUFFICIENT.

Statement 2:
36 - x² = 0
36 = x²
x = ±6.
Since the prompt indicates that x>0, the only viable solution is x=6.
SUFFICIENT.

The correct answer is B.
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