If b < 1 and 2x-b=0, which of the following must be true?

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by GMATGuruNY » Wed Dec 13, 2017 12:32 pm
swerve wrote:If b < 1 and 2x-b=0, which of the following must be true?

A. x > -1
B. x < -2
C. x = 2
D. x < 3
E. x > 3
2x-b = 0
2x = b.

Substituting b=2x into b < 1, we get:
2x < 1
x < 1/2.

If x=0, then B, C and E are not true.
If x=-10, then A is not true.

The correct answer is D.
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