GMAT Quantitative Reasoning Practice Test 2

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Question : 87 of 100

Marks: +1, -0

Which of the following statements is equivalent to

(8+2 X<18- 6 X< 23+2 X) ?

$4 \/ 5< x< 2.5$
$4 \/ 5< x< 8 \/ 5$
$-5 \/ 8< X< 5 \/ 4$
$2.5< x< 3.5$
$5< 8 x< 12$

Solution:

Take the expression and simplify it: Take

(8+2 X)

from each side to get:

(0< 10-8 X< 15)

. Substitute

10,-10< -8 x< 5

.
Divide all by

(-8), 5 / 4>X>-5 / 8

.

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