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

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CEO
Joined: 21 Jan 2007
Posts: 2764
Location: New York City
Followers: 9

Kudos [?]: 349 [0], given: 4

Given: | 10y - 4 | > 7 and y < 1 Can y be -.8 [#permalink]  14 Oct 2007, 03:07
Given:

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

Can y be -.8?
Senior Manager
Joined: 11 Sep 2005
Posts: 329
Followers: 1

Kudos [?]: 42 [0], given: 0

Re: Absolute Inequalities [#permalink]  14 Oct 2007, 03:25
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
SVP
Joined: 01 May 2006
Posts: 1805
Followers: 8

Kudos [?]: 99 [0], given: 0

(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.
Senior Manager
Joined: 27 Aug 2007
Posts: 253
Followers: 1

Kudos [?]: 10 [0], given: 0

Another D,

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

Ans: D
Director
Joined: 22 Aug 2007
Posts: 572
Followers: 1

Kudos [?]: 14 [0], given: 0

Re: Absolute Inequalities [#permalink]  18 Oct 2007, 20:13
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, 20:13
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