simple ps problems...can anyone help : GMAT Problem Solving (PS)
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# simple ps problems...can anyone help

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Intern
Joined: 09 Feb 2011
Posts: 11
Followers: 0

Kudos [?]: 71 [0], given: 1

simple ps problems...can anyone help [#permalink]

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10 Feb 2011, 05:04
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Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

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On Saturday morning, Malachi will begin a camping vacation and he will return home at
the end of the first day on which it rains. If on the first three days of the vacation the
probability of rain on each day is 0.2, what is the probability that Malachi will return
home at the end of the day on the following Monday?
A. 0.008
B. 0.128
C. 0.488
D. 0.512
E. 0.640

Last year the price per share of Stock X increased by k percent and the earnings per share
of Stock X increased by m percent, where k is greater than m. By what percent did the
ratio of price per share to earnings per share increase, in terms of k and m?
A. k m %
B. (k – m) %
6
C. [100(k – m)] / (100 + k) %
D. [100(k – m)] / (100 + m) %
E. [100(k – m)] / (100 + k + m) %

Which of the following is equal to (212 – 26) / (26 – 23)?
A. 26 + 23
B. 26 - 23
C. 29
D. 23
E. 2
[Reveal] Spoiler: OA
Math Expert
Joined: 02 Sep 2009
Posts: 36601
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Re: simple ps problems...can anyone help [#permalink]

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10 Feb 2011, 05:20
Welcome to GMAT Club!

Question #1: rain-and-return-probability-100297.html
Question #2: simple-but-couldnt-do-on-test-89307.html
Question #3: easier-way-to-do-this-93194.html

P.S.

Writing Mathematical Formulas in the GMAT Club Forums: writing-mathematical-symbols-in-posts-72468.html

Also please post one question per topic.

Topic locked.
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Re: simple ps problems...can anyone help   [#permalink] 10 Feb 2011, 05:20
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