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

Redeem

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.

★★★★★5.0559 reviews
Vote for Target Test Prep, Newsweek Readers’ Choice Awards 2026
NEWSWEEK READERS’ CHOICE 2026

BIG NEWS! Target Test Prep has been nominated, and they’d love your vote!

TTP has worked incredibly hard to build the best test prep experience possible, and winning Newsweek’s 2026 Readers’ Choice Award for Best Test Prep would mean a lot to them. If TTP has helped you, they’d be incredibly grateful for your vote. You can vote once each day through September 9.

Vote for TTP
GMATLiveTeach 7 seats left
Chris Peckover
NEXT LIVE COHORT

Oct 13 to Jan 7, 2027

with Chris Peckover

Schedule
Tue, Thu · 8:00 to 10:00 PM ET
Included
40 live hours + 6 months of GMAT OnDemand
  • Live instruction and real-time questions
  • Class recordings and assigned practice
View class & enroll
Limited cohort · enrollment openTarget Test Prep
EALiveTeach 5 seats left
Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

Schedule
Sun · 9:30 AM to 12:30 PM ET
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
Limited cohort · enrollment openTarget Test Prep
GMATOnDemand Start 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 559 reviewsTarget Test Prep

Compare the format, schedule, and included access before enrolling. Prices and seat counts shown reflect the supplied offer details.

A rectangular solid box is \(x\) inches long, \(y\) inches wide, and \(z\) inches tall, where \(x, y,\) and \(z\) are

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Moderator
Posts: 2058
Joined: Sun Oct 29, 2017 4:24 amFollowed by: 5 members
Thanked: 1 times
by M7MBA » Fri Jul 24, 2020 7:26 am

Timer

00:00

Answers

A

B

C

D

E

Stats

Difficulty—

A rectangular solid box is \(x\) inches long, \(y\) inches wide, and \(z\) inches tall, where \(x, y,\) and \(z\) are positive integers, exactly two of which are equal. What is the total surface area of the box?

(1) One face of the box has an area of 9 square inches.

(2) One face of the box has an area of 81 square inches.

[spoiler]OA=E[/spoiler]

Source: Manhattan GMAT
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Data Sufficiency |
Legendary Member
Posts: 2214
Joined: Fri Mar 02, 2018 2:22 pmFollowed by: 5 members

Re: A rectangular solid box is \(x\) inches long, \(y\) inches wide, and \(z\) inches tall, where \(x, y,\) and \(z\) ar

by deloitte247 » Sat Jul 25, 2020 10:03 pm
Given that length = x inches, width = y inches and height = z inches.
* Exactly tow of the length, width and height are equal,
Target question: What is the total surface area?
Surface area of a solid box = 2(h*w) + 2(h*l) + 2(w*l)

Statement 1 => One face of the box has an area of 9 square inches.
We do not know if the face is rectangular or square. Also, the length and breadth of the face in question is either 3x3 or 9x1, and we cannot relate this to the length, width, or height of the entire box as it could be any value.
So, therefore, statement 1 is NOT SUFFICIENT.

Statement 2 => One face of the box has an area of 81 square inches.
we do not know if the face is rectangular or square. So, the length and breadth of the given face can be 9x9, 27x3, 81x1. And at that, we cannot relate it to the length, width, or height of the entire box as it could be any value. So, statement 2 is NOT SUFFICIENT.

Combining both statements together:
None of the statements gives a definite value for the length, width, or height, so, the surface area cannot be evaluated. Therefore, both statements combined together are NOT SUFFICIENT.

Answer = option E
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1