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

    Available with Beat the GMAT members only code

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

    Available with Beat the GMAT members only code

    MORE DETAILS
    Economist 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
  • 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

A, B, C are three consecutive positive integers (A>B>C

This topic has 1 expert reply and 0 member replies

A, B, C are three consecutive positive integers (A>B>C

Post Mon Nov 06, 2017 6:37 am
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    A, B, C are three consecutive positive integers (A>B>C). What is the value of the expression 2A +B +3C?

    A. 6A+7.
    B. 5A+1.
    C. 5A-1.
    D. 6A-5.
    E. 6A-7.

    The OA is E.

    What is the best approach to solve this PS question? Experts, can you help me?

    Need free GMAT or MBA advice from an expert? Register for Beat The GMAT now and post your question in these forums!
    Post Mon Nov 06, 2017 7:04 am
    M7MBA wrote:
    A, B, C are three consecutive positive integers (A>B>C). What is the value of the expression 2A +B +3C?

    A. 6A+7.
    B. 5A+1.
    C. 5A-1.
    D. 6A-5.
    E. 6A-7.

    The OA is E.

    What is the best approach to solve this PS question? Experts, can you help me?
    Here's one approach:

    Let the three consecutive positive integers be 1, 2 and 3
    That is, A = 3, B = 2, C = 1

    What is the value of the expression 2A +B +3C?
    Well, if A = 3, B = 2, C = 1, then 2A +B +3C = 2(3) +2 +3(1) = 11

    So, when A = 3, we find that A +B +3C = 11
    Now test the answer choices, to see which one yields an output of 11, when A = 3

    A. 6(3) + 7 = 25 ELIMINATE
    B. 5(3) + 1 = 16 ELIMINATE
    C. 5(3) - 1 = 14 ELIMINATE
    D. 6(3) - 5 = 13 ELIMINATE
    E. 6(3) - 7 = 11 KEEP

    Answer: E

    RELATED VIDEO
    [you-tube]https://www.youtube.com/watch?v=SaL4wMiiaEE[/you-tube]

    _________________
    Brent Hanneson – Founder of GMATPrepNow.com
    Use our video course along with Beat The GMAT's free 60-Day Study Guide

    Check out the online reviews of our course
    Come see all of our free resources

    GMAT Prep Now's comprehensive video course can be used in conjunction with Beat The GMAT’s FREE 60-Day Study Guide and reach your target score in 2 months!

    Best Conversation Starters

    1 LUANDATO 131 topics
    2 lheiannie07 87 topics
    3 Roland2rule 79 topics
    4 AAPL 75 topics
    5 swerve 68 topics
    See More Top Beat The GMAT Members...

    Most Active Experts

    1 image description EconomistGMATTutor

    The Economist GMAT Tutor

    164 posts
    2 image description Jay@ManhattanReview

    Manhattan Review

    128 posts
    3 image description Brent@GMATPrepNow

    GMAT Prep Now Teacher

    124 posts
    4 image description GMATGuruNY

    The Princeton Review Teacher

    121 posts
    5 image description Rich.C@EMPOWERgma...

    EMPOWERgmat

    120 posts
    See More Top Beat The GMAT Experts