BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem
TTP OnDemand GMAT Video Course
Featured Course

Target Test Prep GMAT OnDemand

Scott Woodbury-Stewart’s private virtual classroom — 400 hours of master-class video lessons for the GMAT Focus Edition.

  • 715+ score guarantee — highest in the industry (99th percentile)
  • 52 chapters · 1,500+ lessons · 4,000+ practice questions
  • 400 hours of video · 1,500+ instructor-led HD smartboard lessons
  • 300,000+ students accepted to Harvard, Stanford, Wharton, Booth & Sloan & more
  • 24/7 live support + weekly Zoom office hours with GMAT instructors
  • TTP AI Assist — 24/7 AI-powered virtual tutor for instant help
  • 1,200+ flashcards + AI-powered study assistant & daily calendar
  • OnDemand, LiveTeach & GMAT Bootcamp formats available
  • Also: GRE, SAT Math & Executive Assessment courses
  • MBA Admissions Consulting now available
  • 🏆 2025 EdTech Breakthrough Award: Test Prep Solution Provider of the Year
  • 200,000+ students served
  • 5-day free trial — $0 to start, no auto-billing, cancel anytime
★★★★★ 5.0 (559 reviews)
130-pt guarantee
$0 to start then $127/mo
Start Free 5-Day Trial Read 559 Reviews →

Halve the value

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Master | Next Rank: 500 Posts
Posts: 151
Joined: Wed Feb 11, 2009 2:45 am
Thanked: 3 times
by deepoe » Fri Mar 06, 2009 2:41 am
V + W / ( X / YZ )

To halve the value of the expression above by doubling exeactly one of the variables, one must double which of the following variables?

A. V
B. W
C. X
D. Y
E. Z

I don't understand this question :(, could someone explain it to me?
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
Master | Next Rank: 500 Posts
Posts: 107
Joined: Wed Mar 04, 2009 4:39 am
Location: Vancouver
Thanked: 9 times
GMAT Score:750

by pakaskwa » Fri Mar 06, 2009 3:39 am
The answer is C, if the original expression is changed to
(V+W)/(X/YZ)

Because:
(V+W)/(X/YZ)
= (V+W)YZ/X

Half the value means [(V+W)YZ/X]/2 = (V+W)YZ/2X

So must double the variable X.

Can you double check the expression? Because if it's V+W/(X/YZ) , then
=V+WYZ/X
=(VX+WYZ)/X

I don't know how to sovle it.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 151
Joined: Wed Feb 11, 2009 2:45 am
Thanked: 3 times

by deepoe » Fri Mar 06, 2009 1:16 pm
pakaskwa wrote:The answer is C, if the original expression is changed to
(V+W)/(X/YZ)

Because:
(V+W)/(X/YZ)
= (V+W)YZ/X

Half the value means [(V+W)YZ/X]/2 = (V+W)YZ/2X

So must double the variable X.

Can you double check the expression? Because if it's V+W/(X/YZ) , then
=V+WYZ/X
=(VX+WYZ)/X

I don't know how to sovle it.
That is the given equation
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Junior | Next Rank: 30 Posts
Posts: 14
Joined: Wed Feb 18, 2009 4:56 pm
Thanked: 1 times

by devesh99 » Mon Mar 09, 2009 7:49 pm
Hi

I am also getting the answer as C.
Can you post the OA??
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Master | Next Rank: 500 Posts
Posts: 319
Joined: Wed Feb 04, 2009 10:32 amFollowed by: 9 members
Location: Delhi
Thanked: 84 times

by sureshbala » Mon Mar 09, 2009 11:28 pm
Given equation is (V+W)/(X/YZ) = YZ(V+W)/X

Now the value of this equation is to be halved i.e we need i/2[YZ(V+W)/X] = YZ(V+W)/2X.

Hence value of X must be doubled
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1