Welcome! Check out our free B-School Guides to learn how you compare with other applicants.
Login or Register
 

Fraction question from OG 11

This topic has 4 member replies
Bookmark
Previous Topic Next Topic
maxim730 Rising GMAT Star Default Avatar
Joined
26 Dec 2006
Posted:
76 messages
Followed by:
1 members
Fraction question from OG 11 Post Wed Mar 14, 2007 4:11 am
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    I have a simple math question that I'm trying to convert to a formula

    OG11, problem 155 from DS:

    Q:...if 3 liters of water are added to the bucket when it is half full of water, the amount of water in the bucket will increase by 1/3..

    when they explain the answer they do so this way:

    Q: "when 3 liters are added, the volume of water will increase by 1/3, which is equivalent to multiplying the present value by 4/3"
    3 + 1/2c = 4/3(1/2c)

    I understand the 3 + 1/2c.

    My question to you is.. how is the 4/3 part equivalent to the "increasing by 1/3" part??

    Can anyone give me a simple example demonstrating their reasoning? I'm a bit confused.. I tried to set up a sample problem using the above method but wasn't able to.

    Thanks!!

    Need free GMAT or MBA advice from an expert? Register for Beat The GMAT now and post your question in these forums!
    aim-wsc GMAT Titan
    Joined
    20 Apr 2006
    Posted:
    2472 messages
    Followed by:
    10 members
    Thanked:
    75 times
    Target GMAT Score:
    801-
    Post Wed Mar 14, 2007 4:30 am
    maxim730 wrote:
    Q: "when 3 liters are added, the volume of water will increase by 1/3, which is equivalent to multiplying the present value by 4/3"
    since you couldnt get OG explanation, let me use other method.

    when u add 1/3 (ie 0.33) into somethin u actually multiply original value by 1.33. that means 1+1/3 = 4/3

    hope this helps Smile

    _________________
    Getting started @BTG?
    Beginner's Guide to GMAT | Beating GMAT & beyond
    Please do not PM me, (not active anymore) contact Eric.

    gabriel GMAT Destroyer!
    Joined
    20 Dec 2006
    Posted:
    986 messages
    Followed by:
    1 members
    Thanked:
    49 times
    Post Wed Mar 14, 2007 4:38 am
    maxim730 wrote:
    I have a simple math question that I'm trying to convert to a formula

    OG11, problem 155 from DS:

    Q:...if 3 liters of water are added to the bucket when it is half full of water, the amount of water in the bucket will increase by 1/3..

    when they explain the answer they do so this way:

    Q: "when 3 liters are added, the volume of water will increase by 1/3, which is equivalent to multiplying the present value by 4/3"
    3 + 1/2c = 4/3(1/2c)

    I understand the 3 + 1/2c.

    My question to you is.. how is the 4/3 part equivalent to the "increasing by 1/3" part??

    Can anyone give me a simple example demonstrating their reasoning? I'm a bit confused.. I tried to set up a sample problem using the above method but wasn't able to.

    Thanks!!
    ..... consider a number 100.... ur asked to increase it by 1/3rd.... the way to do it is add 100*1/3 to 100.... therefore the answer is 100+100/3.... which is equal to 100 ( 1+1/3) ... solve the bracket and u get 100*4/3... hope that helps...

    gabriel GMAT Destroyer!
    Joined
    20 Dec 2006
    Posted:
    986 messages
    Followed by:
    1 members
    Thanked:
    49 times
    Post Wed Mar 14, 2007 4:42 am
    double post... ignore....

    maxim730 Rising GMAT Star Default Avatar
    Joined
    26 Dec 2006
    Posted:
    76 messages
    Followed by:
    1 members
    Post Wed Mar 14, 2007 6:25 am
    Makes total sense. Thanks guys. So its like % increase Smile

    Best Conversation Starters
    1 varun289 43 topics
    2 greenwich 30 topics
    3 sana.noor 21 topics
    4 guerrero 20 topics
    5 killerdrummer 19 topics
    See More Top Beat The GMAT Members...

    Most Active Experts
    1 image description Brent@GMATPrepNow

    GMAT Prep Now Teacher

    		 202 posts
    2 image description GMATGuruNY

    The Princeton Review Teacher

    		 143 posts
    3 image description Anju@Gurome

    Gurome

    		 134 posts
    4 image description Jim@StratusPrep

    Stratus Prep

    		 86 posts
    5 image description David@VeritasPrep

    Veritas Prep

    		 41 posts
    See More Top Beat The GMAT Experts