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

    Available with Beat the GMAT members only code

    MORE DETAILS
    Economist Test Prep
  • Magoosh
    Magoosh
    Study with Magoosh GMAT prep

    Available with Beat the GMAT members only code

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

    Available with Beat the GMAT members only code

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

    Available with Beat the GMAT members only code

    MORE DETAILS
    EMPOWERgmat Slider
  • Veritas Prep
    Free Veritas GMAT Class
    Experience Lesson 1 Live Free

    Available with Beat the GMAT members only code

    MORE DETAILS
    Veritas Prep

IR Question - how to solve

This topic has 1 expert reply and 0 member replies
prashanth.guru Newbie | Next Rank: 10 Posts Default Avatar
Joined
21 Jul 2013
Posted:
6 messages

IR Question - how to solve

Post Thu Aug 08, 2013 11:40 pm


Please let me how to solve the question in the attached image to arrive at the ans marked in the squares of each column

Need free GMAT or MBA advice from an expert? Register for Beat The GMAT now and post your question in these forums!

GMAT/MBA Expert

Post Mon Aug 26, 2013 2:03 pm
Dear prashanth.guru,
I'm happy to help with this. Smile

We know that r = 5, so this gives us the equation

5 = (4x + 8y)/(x + y)

Multiply both sides by that denominator, (x + y)

5*(x + y) = 4x + 8y
5x + 5y = 4x + 8y
x = 3y

So, we see that x must be three times y. So, start with the smallest y: if y = 21, then x = 3*21 = 63, which is not an option. Next y, y = 32, means x = 3*32 = 96 --- bingo! That's it. OA = {x = 96, y = 32}

Does this make sense?

BTW, you may find this helpful:
http://magoosh.com/gmat/2012/gmat-integrated-reasoning-ebook/

Mike Smile

_________________
Magoosh GMAT Instructor
http://gmat.magoosh.com/

Best Conversation Starters

1 Vincen 152 topics
2 lheiannie07 61 topics
3 Roland2rule 49 topics
4 ardz24 40 topics
5 LUANDATO 32 topics
See More Top Beat The GMAT Members...

Most Active Experts

1 image description Brent@GMATPrepNow

GMAT Prep Now Teacher

141 posts
2 image description EconomistGMATTutor

The Economist GMAT Tutor

107 posts
3 image description GMATGuruNY

The Princeton Review Teacher

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

EMPOWERgmat

104 posts
5 image description Matt@VeritasPrep

Veritas Prep

76 posts
See More Top Beat The GMAT Experts