Live GMAT classes with Target Test Prep start Nov 21 and Nov 22. First class free.

See classes
Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

Newsweek Readers’ Choice Awards 2026 winner: Target Test Prep, #1 Test Prep

Target Test Prep was voted #1 Best Test Prep in the 2026 Newsweek Readers’ Choice™ Awards.

★★★★★5.0563 reviews
GMATLiveTeachStarts Nov 22
Josh Braslow, Target Test Prep GMAT expert
LIVE ONLINE CLASSES

Get Ready for GMAT Test Day Faster with Live Online Classes

with Josh Braslow, 20+ years in test prep

Nov 22 · Josh Braslow
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes + 6 months of TTP OnDemand
  • Attend the first class for free
  • Every class is recorded, so you never fall behind
View classes & enroll
Limited seats availableTarget Test Prep
EALiveTeachOnDemandStart anytime
EXECUTIVE ASSESSMENT

Target Test Prep EA OnDemand

Self-paced EA prep. Study on your schedule.

EXECUTIVE ASSESSMENT

with

165+ EA score guarantee
$05-day trial no automatic billing
Schedule
Included
40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
  • 165+ EA Score Guarantee
  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
  • 400+ hours of in-depth video lessons
  • 3,000+ step-by-step video solutions
View EA class & enroll Start free 5-day trial
Limited cohort · enrollment openTrial includes full course accessTarget Test Prep
GMATOnDemandStart anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions
Start free 5-day trial
Read 563 reviewsTarget Test Prep

PLEASE HELP

Problem Solving — algebra and arithmetic
Expert replies
Post new topic Post Reply
Subscribe topic
Previous Topic Next Topic
Junior | Next Rank: 30 Posts
Posts: 10
Joined: Fri Apr 20, 2007 1:18 pm
by recocollins » Fri Mar 28, 2008 10:59 pm
I would greatly appreciate any assistance with figuring out the attached problems thanks.

Have a great day.
You do not have the required permissions to view the files attached to this post.
Top
Join the discussion
Source: — Quantitative Reasoning |
Newbie | Next Rank: 10 Posts
Posts: 3
Joined: Sat Mar 29, 2008 12:23 am

by prateekpuri » Sat Mar 29, 2008 2:09 am
Hey
These are my answers and the explanations
Question 1.
Anwer : 1 (Statement 1 is sufficient)

angle ABC = 180 - (angle BAC + angle ACB)
angle ABC = 180 - 3x

angle DBC = 180 - (ang BDC + and DCB) = 180 - 4x

ang DBA = ang ABC - ang DBC
ang DBA = (180 - 3x) - (180 - 4x) = x

ang BAC = ang DBA, therefore length of AD = length of BD

ang BDC = ang DCB, therefore length of CD = length of BD.

so length of AD = length of BD = length of CD
so option 1 alone is enough

Option 2 tells about value of x, but that doesnt tell anything abt the length.



Question 2:
Answer : Optoin 5

Explanation
Option 1 says (a + b)^2 = a^2 + b^2 . this is wrong
option 2 : (a + b ) + 1 = (a + 1) + (b + 1)
a + b + 1 = a +b+2
this is also wrong

opoin 3: square root(a+b) = square root(a) + square root(b)
this is also wrong

option 4: 2/(a+b) = 2/a + 2/b
This is also wrong (put a=1 and b=1, you will see it is wrong)

option5 :
-3 * (a + b) = (-3 * a) + (-3 * b)
-3a -3b = -3a -3b
So this is correct


Hopefully this helps
Top
Join the discussion