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
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
Live EA class + 6 months of EA OnDemand
  • Expert-led weekly online sessions
  • EA Masterclass access between classes
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.

130-point 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.

OG Green Q76

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Legendary Member
Posts: 727
Joined: Sun Jun 08, 2008 9:32 pmFollowed by: 1 member
Thanked: 8 times
by umaa » Wed Jan 14, 2009 12:29 pm
Today Rose is twice as old as Sam and Sam is 3 years younger than Tina. If Rose, Sam, and Tina are all alive 4 years from today, which of the following must be true on that day?

I. Rose is twice as old as Sam

II Sam is 3 years younger than Tina

III. Rose is older than Tina

A. I only
B. II only
C. III only
D. I and II only
E. II and III only

I chose E.

My explanation:

Assume, R 50.

R=2S
So, S = 25

S = T-3
So, T = 28

After 4 years,

R = 54

S = 29

T = 32

They satisfy both II and III conditions. Let me know if I'm wrong.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
User avatar
GMAT Instructor
Posts: 3225
Joined: Tue Jan 08, 2008 2:40 pmFollowed by: 614 members
Location: Toronto
Thanked: 1710 times
GMAT Score:800

Re: OG Green Q76

by Stuart@KaplanGMAT » Wed Jan 14, 2009 12:59 pm
umaa wrote:Today Rose is twice as old as Sam and Sam is 3 years younger than Tina. If Rose, Sam, and Tina are all alive 4 years from today, which of the following must be true on that day?

I. Rose is twice as old as Sam

II Sam is 3 years younger than Tina

III. Rose is older than Tina

A. I only
B. II only
C. III only
D. I and II only
E. II and III only

I chose E.

My explanation:

Assume, R 50.

R=2S
So, S = 25

S = T-3
So, T = 28

After 4 years,

R = 54

S = 29

T = 32

They satisfy both II and III conditions. Let me know if I'm wrong.
You answered the question "which of the following COULD be true on that day". However, the question is asking about what "MUST" be true.

If you pick different numbers, you'll see that III is not a MUST be true.

For example, if we let:

R = 2
S = 1
T = 4

we still follow the original rules, but we see that Rose is NOT older than Tina.

Accordingly, only statement II is a "MUST" be true: choose (B).
Image

Stuart Kovinsky | Kaplan GMAT Faculty | Toronto

Kaplan Exclusive: The Official Test Day Experience | Ready to Take a Free Practice Test? | Kaplan/Beat the GMAT Member Discount
BTG100 for $100 off a full course
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 727
Joined: Sun Jun 08, 2008 9:32 pmFollowed by: 1 member
Thanked: 8 times

by umaa » Wed Jan 14, 2009 1:01 pm
Got it. Thx..
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1