• e-gmat Exclusive Offer
    Get 300+ Practice Questions
    25 Video lessons and 6 Webinars for FREE

    Available with Beat the GMAT members only code

    MORE DETAILS
    e-gmat Exclusive Offer
  • Magoosh
    Magoosh
    Study with Magoosh GMAT prep

    Available with Beat the GMAT members only code

    MORE DETAILS
    Magoosh
  • Varsity Tutors
    Award-winning private GMAT tutoring
    Register now and save up to $200

    Available with Beat the GMAT members only code

    MORE DETAILS
    Varsity Tutors
  • Target Test Prep
    5-Day Free Trial
    5-day free, full-access trial TTP Quant

    Available with Beat the GMAT members only code

    MORE DETAILS
    Target Test Prep
  • PrepScholar GMAT
    5 Day FREE Trial
    Study Smarter, Not Harder

    Available with Beat the GMAT members only code

    MORE DETAILS
    PrepScholar GMAT
  • EMPOWERgmat Slider
    1 Hour Free
    BEAT THE GMAT EXCLUSIVE

    Available with Beat the GMAT members only code

    MORE DETAILS
    EMPOWERgmat Slider
  • Economist Test Prep
    Free Trial & Practice Exam
    BEAT THE GMAT EXCLUSIVE

    Available with Beat the GMAT members only code

    MORE DETAILS
    Economist Test Prep
  • Kaplan Test Prep
    Free Practice Test & Review
    How would you score if you took the GMAT

    Available with Beat the GMAT members only code

    MORE DETAILS
    Kaplan Test Prep
  • Veritas Prep
    Free Veritas GMAT Class
    Experience Lesson 1 Live Free

    Available with Beat the GMAT members only code

    MORE DETAILS
    Veritas Prep

Option C or D

This topic has 1 member reply
nishant_1010 Junior | Next Rank: 30 Posts Default Avatar
Joined
05 Jan 2007
Posted:
14 messages
Thanked:
1 times

Option C or D

Post Fri Apr 27, 2007 1:44 am
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    Q 19 (1000CR--> LSAT 24 -->section IV)

    19. Nearly all mail that is correctly addressed arrives at its destination within two business days of being sent. In fact, correctly addressed mail takes longer than this only when it is damaged in transit. Overall, however, most mail arrives three business days or more after being sent.
    If the statements above are true, which one of the following must be true?
    (A) A large proportion of the mail that is correctly addressed is damaged in transit.
    (B) No incorrectly addressed mail arrives within two business days of being sent.
    (C) Most mail that arrives within two business days of being sent is correctly addressed.
    (D) A large proportion of mail is incorrectly addressed.
    (E) More mail arrives within two business days of being sent than arrives between two and three business days after being sent.

    Official Answer = D


    But according to me answer should be C

    My explanation

    Consdier the following funda of logical reasoning

    X will not happen unless Y happens

    This means that there are several things needed for X to happen out of which one is Y. So even if one of these several things is abscent then X will not happen. So it is not guranteed that if Y is there then X will surely happen since some other necessary thing might be abscent.

    But is it sure that if X happens then Y must have happened. Because if X has happened then all the several components were there. So Y was also there.


    Applying this logic to the problem

    Being correctly addressed is one of the components for most of the mails to reach the destination within two days.

    So most of the mails which have reached the destination within two days must have been addressed properly. Hence C

    For not reaching the destination the two cases are
    1. Mail incorrectly addressed
    2. Mail damaged during tansit

    Even if any one of them occurs then the mail does not reach in 2 days.

    Out of these which one is more dominant reason than the other we cannot conclude form the argument.

    D says that for not reaching in 2 days being incorrectly addressed is the more dominant factor. Hence D should be incorrect

    So according to this logic C should be the correct answer and not D

    Need free GMAT or MBA advice from an expert? Register for Beat The GMAT now and post your question in these forums!
    isisalaska Community Manager Default Avatar
    Joined
    10 Dec 2006
    Posted:
    363 messages
    Followed by:
    2 members
    Thanked:
    7 times
    Post Fri Apr 27, 2007 5:01 am
    If most mail arrives three business days or more after being sent means that they were either incorrectly addressed or correctly addressed but damaged.

    Passage says: "correctly addressed mail takes longer than this only when it is damaged in transit"
    Therefore if overall mail takes 3 business days or more the best explanation is was incorrectly addressed

    _________________
    Isis Alaska

    Best Conversation Starters

    1 Vincen 132 topics
    2 lheiannie07 65 topics
    3 LUANDATO 54 topics
    4 Roland2rule 43 topics
    5 ardz24 40 topics
    See More Top Beat The GMAT Members...

    Most Active Experts

    1 image description Brent@GMATPrepNow

    GMAT Prep Now Teacher

    133 posts
    2 image description GMATGuruNY

    The Princeton Review Teacher

    114 posts
    3 image description EconomistGMATTutor

    The Economist GMAT Tutor

    113 posts
    4 image description Rich.C@EMPOWERgma...

    EMPOWERgmat

    109 posts
    5 image description DavidG@VeritasPrep

    Veritas Prep

    72 posts
    See More Top Beat The GMAT Experts