Given: | 10y - 4 | > 7 and y < 1 Can y be -.8

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Given: | 10y - 4 | > 7 and y < 1 Can y be -.8 [#permalink]

14 Oct 2007, 04:07

Given:

| 10y - 4 | > 7
and
y < 1

Can y be -.8?

Senior Manager

Joined: 11 Sep 2005

Posts: 331

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Re: Absolute Inequalities [#permalink]

14 Oct 2007, 04:25

I wud go for B - Info II is suff...

Info 1 - gives y>1.1 & y<-0.3 INSUFF - ANS y CAN/CANNOT be -0.8
Info 2 - gives y<1 SUFF - ANS y CAN be -0.8

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[#permalink]

14 Oct 2007, 05:41

(D) for me

Stat 1
| 10y - 4 | > 7

o If y >= 4/10 = 2/5
| 10y - 4 | > 7
<=> 10*y - 4 > 7
<=> y > 11/10 >>>>> OK

o If y < 4/10 = 2/5
| 10y - 4 | > 7
<=> -(10*y - 4) > 7
<=> y < -3/10 >>>>> OK

Solutions are y < - 3/10 OR y > 11/10

Finally
-0.8 = -8/10 < - 3/10

SUFF.

Stat 2
y < 1
and -0.8 = -8/10 < 1

SUFF.

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[#permalink]

14 Oct 2007, 08:15

Another D,

Just plugged in the value and see whether it satisfies equation, and it does in both cases.

Ans: D

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Re: Absolute Inequalities [#permalink]

18 Oct 2007, 21:13

bmwhype2 wrote:

Given:

| 10y - 4 | > 7
and
y < 1

Can y be -.8?

One more for D

Just plug in if the inequality is true then y can be -0.8

Re: Absolute Inequalities [#permalink] 18 Oct 2007, 21:13

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Given: | 10y - 4 | > 7 and y < 1 Can y be -.8

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Given: | 10y - 4 | > 7 and y < 1 Can y be -.8

Given: | 10y - 4 | > 7 and y < 1 Can y be -.8

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