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 Starts Oct 17
Chris Peckover, Target Test Prep GMAT expert
LIVE ONLINE CLASSES

Get Ready for GMAT Test Day Faster with Live Online Classes

with Chris Peckover, 100th-Percentile GMAT Scorer

Oct 17 · Chris Peckover
Sat · 11:00 AM to 2:00 PM ET
Oct 20 · Chris Peckover
Tue, Thu · 8:00 to 10:00 PM ET
Oct 25 · Josh Braslow
Sun · 1:00 to 4:00 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
EALiveTeachOnDemand 5 seats left Start anytime
EXECUTIVE ASSESSMENT

Target Test Prep EA OnDemand

Self-paced EA prep. Study on your schedule.

Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

165+ EA score guarantee
$05-day trial no automatic billing
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 Start free 5-day trial
Limited cohort · enrollment openTrial includes full course accessTarget 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.

Fred age

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 » Thu May 21, 2009 3:52 am
The sum of the ages of Doris and Fred is Y years. If Doris is 12 years older than Fred, how many years will Fred be Y years from now, in term of Y?

A. y -6
B. 2y -6
C. (y/2) - 6
D. (3y/2) -6
E. (5y/2) -6


I picked numbers.

Sum of ages = 32

Doris = 22
Fred = 10

And than 10 years from now.

So Fred will be 22.

Answer is D, but i didn't got 22 as answer there.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
Legendary Member
Posts: 1035
Joined: Wed Aug 27, 2008 10:56 pmFollowed by: 1 member
Thanked: 104 times

by scoobydooby » Thu May 21, 2009 4:20 am
notice the question asks y years from now.

y=sum of ages of Fed, Doris or 32 in your case.

fred in 32 years will be 10+32=42 yrs old

when you plug in the choices you get 42 only for choice D
for D, 3y/2-6=3*32/2-6=48-6=42
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 1169
Joined: Sun Jul 06, 2008 2:34 amFollowed by: 1 member
Thanked: 25 times

by aj5105 » Thu May 21, 2009 4:23 am
D + F = Y

F + 12 + F = Y

Pick F = 10

(10 + 12) + 10 = 32

Y = 32

10 + 32 = 42 ( F, 32 years from now).

What you can do now is substitute Y = 32 in the answer choices. The one in which you get 42 is the answer.

(D)
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 418
Joined: Wed Jun 11, 2008 5:29 am
Thanked: 65 times

by bluementor » Thu May 21, 2009 4:31 am
you could try to solve this without plugging numbers:

Fred's age = F
Doris's age = D

F + Y = ?

Given that,

F + D = Y (eqn 1)

D = 12 + F (eqn 2)

(eqn 1) - (eqn 2):

F + D - D = Y - 12 - F
2F = Y - 12
2F + 2Y = Y - 12 + 2Y
2(F + Y) = 3Y - 12
F + Y = 3Y/2 - 6

Choose D.

-BM-
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Junior | Next Rank: 30 Posts
Posts: 22
Joined: Tue Feb 07, 2012 12:35 pm
Thanked: 1 times

by dhlee922 » Sun Jan 19, 2014 2:20 pm
never mind, i figured it out, need to add Y to both sides, which in effect cancels and you get the answers as stated above


why cant you say

1. D + F = Y
2. D = 12+F

from formulat 2 above, F = D-12

then to get Fred plus Y years, F = D - 12 + Y
D = Y - F from #1

F = Y - F -12 + Y
F = 2Y -F - 12
2F = 2Y - 12
F = Y -6
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1