• 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
  • Veritas Prep
    Free Veritas GMAT Class
    Experience Lesson 1 Live Free

    Available with Beat the GMAT members only code

    MORE DETAILS
    Veritas Prep
  • Magoosh
    Magoosh
    Study with Magoosh GMAT prep

    Available with Beat the GMAT members only code

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

    Available with Beat the GMAT members only code

    MORE DETAILS
    EMPOWERgmat Slider
  • PrepScholar GMAT
    5 Day FREE Trial
    Study Smarter, Not Harder

    Available with Beat the GMAT members only code

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

    Available with Beat the GMAT members only code

    MORE DETAILS
    Economist Test Prep
  • 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
  • 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
  • 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

gmat prep question

This topic has 4 member replies
yvonne12 Master | Next Rank: 500 Posts Default Avatar
Joined
07 Feb 2007
Posted:
144 messages

gmat prep question

Post Sun Mar 04, 2007 12:23 pm
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    when a certain tree was first planted, it was 4 feet tall and the height of the tree increased by a constnt amount each year for the next 6 years. At the end of the 6th year the tree was 1/5 taller than it was at the end of the 4the year. By how many feet did the height fo the tree increase each year?

    answer. 2/3

    Need free GMAT or MBA advice from an expert? Register for Beat The GMAT now and post your question in these forums!
    jayhawk2001 Community Manager
    Joined
    28 Jan 2007
    Posted:
    789 messages
    Followed by:
    1 members
    Thanked:
    29 times
    Post Sun Mar 04, 2007 6:09 pm
    Lets assume the tree grew by x feet each year (i.e. the constant rate).
    At the end of the 6th year, the tree would be 4 + 6x. Similarly at the
    end of the 4th year, it would be 4 + 4x.

    Hence 4 + 6x = (4 + 4x)*6/5

    or x = 2/3

    yvonne12 Master | Next Rank: 500 Posts Default Avatar
    Joined
    07 Feb 2007
    Posted:
    144 messages
    Post Mon Mar 05, 2007 8:22 am
    where did you get 6/5??? its 1/5

    thats the only thing that Im stuck on. please explain

    ssiva Junior | Next Rank: 30 Posts Default Avatar
    Joined
    13 Feb 2007
    Posted:
    16 messages
    Thanked:
    1 times
    Post Mon Mar 05, 2007 10:51 am
    At the end of the 6th year the tree was 1/5 taller than it was at the end of the 4the year.

    So height at end of 6th year is greater then height at end of 4th year. ( Note the word "than" in the problem )

    height at end of 6th year = height at end of 4th year + height at end of 4th year * (1/5)
    4 + 6x = 4 + 4x + (4+4x)*1/5
    4 + 6x = ( 4 + 4x ) * 6/5
    x = 2/3

    "

    4+6x = (4+4x)*1/5 indicates that height at 6th year is less then height after 4 yrs; which cannot be true because height increases at a constant rate of x / year.



    Last edited by ssiva on Tue Mar 06, 2007 1:39 pm; edited 1 time in total

    yvonne12 Master | Next Rank: 500 Posts Default Avatar
    Joined
    07 Feb 2007
    Posted:
    144 messages
    Post Mon Mar 05, 2007 5:00 pm
    thanks for taking the time. I appreciate it.

    Best Conversation Starters

    1 Vincen 180 topics
    2 lheiannie07 65 topics
    3 Roland2rule 49 topics
    4 ardz24 40 topics
    5 LUANDATO 16 topics
    See More Top Beat The GMAT Members...

    Most Active Experts

    1 image description Brent@GMATPrepNow

    GMAT Prep Now Teacher

    146 posts
    2 image description Rich.C@EMPOWERgma...

    EMPOWERgmat

    103 posts
    3 image description GMATGuruNY

    The Princeton Review Teacher

    100 posts
    4 image description EconomistGMATTutor

    The Economist GMAT Tutor

    92 posts
    5 image description Jay@ManhattanReview

    Manhattan Review

    79 posts
    See More Top Beat The GMAT Experts