PT28 LR S1 #20

jim-green
Posts: 808
Joined: Sat Feb 12, 2011 7:55 pm

PT28 LR S1 #20

Postby jim-green » Wed Apr 06, 2011 3:04 pm

Has anyone done PT28 LR S1 #20? What makes ans A correct?

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Sh@keNb@ke
Posts: 287
Joined: Wed Jul 14, 2010 3:54 am

Re: PT28 LR S1 #20

Postby Sh@keNb@ke » Wed Apr 06, 2011 3:18 pm

jim-green wrote:Has anyone done PT28 LR S1 #20? What makes ans A correct?


W --> PC (Weak --> Prices constant)
W --> UR (Weak --> Unemployment rises)
UR --> ID (Unemployment Rises --> Investment Decreases)

Conclusion: Investment does not decrease.

By negating this you get ~ID --> ~UR --> ~W

(A) States that the economy is weak or investment is decreasing, but we know from our negation that investment is NOT decreasing therefore we can deduct that the economy is NOT weak. (A) is not a possibility and must be false.

jim-green
Posts: 808
Joined: Sat Feb 12, 2011 7:55 pm

Re: PT28 LR S1 #20

Postby jim-green » Wed Apr 06, 2011 3:41 pm

Sh@keNb@ke wrote:(A) is not a possibility and must be false.
Thanks!




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