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.

tree question

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Newbie | Next Rank: 10 Posts
Posts: 8
Joined: Sat May 03, 2008 10:02 pm
by tacobell » Sun May 11, 2008 8:28 am
When a certain tree was first planted, it was 4 feet tall, and the height of hte tree increased by a constant amount each year for the next 6 years. At the end of the 6th year, the tree is 1/5 taller than it was at the end of the 4th year. By how many heet did the height of the tree increase each year?

3/10
2/5
1/2
2/3
6/5


Thanks in advance

P.S. How do I add an image without making it an attachment?
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
User avatar
GMAT Instructor
Posts: 189
Joined: Thu May 01, 2008 10:55 pmFollowed by: 1 member
Location: Seattle, WA
Thanked: 25 times
GMAT Score:750+

by VP_Tatiana » Sun May 11, 2008 9:49 am
What we need to do is make an algebraic expression for: "At the end of the 6th year, the tree is 1/5 taller than it was at the end of the 4th year."

I am going to call the annual growth x.

The height of the tree after 4 years is: 4 ft + 4x
The height of the tree after 6 years is: 4 ft + 6x

We know that after 6 years, the tree is 1 1/5 times (or 6/5) the height of the 4th year.

So, we have (6/5)(4 + 4x) = 4 + 6x

Multiply both sides by 5, to get:

6(4 + 4x) = 20 + 30x

Multiply out to get:

24 + 24x = 20 + 30 x

Combine like terms to get:

4 = 6x

Divide by 6 to get 4/6 = x. So, 2/3 = x.

Let me know if you have questions,

Tatiana
Tatiana Becker | GMAT Instructor | Veritas Prep
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Newbie | Next Rank: 10 Posts
Posts: 8
Joined: Sat May 03, 2008 10:02 pm

by tacobell » Sun May 11, 2008 9:59 am
thanks.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Junior | Next Rank: 30 Posts
Posts: 23
Joined: Tue Nov 11, 2008 6:46 am

equation

by mmgmat2008 » Sun Dec 07, 2008 5:58 am
VP_Tatiana wrote:What we need to do is make an algebraic expression for: "At the end of the 6th year, the tree is 1/5 taller than it was at the end of the 4th year."

I am going to call the annual growth x.

The height of the tree after 4 years is: 4 ft + 4x
The height of the tree after 6 years is: 4 ft + 6x

We know that after 6 years, the tree is 1 1/5 times (or 6/5) the height of the 4th year.

So, we have (6/5)(4 + 4x) = 4 + 6x

Multiply both sides by 5, to get:

6(4 + 4x) = 20 + 30x

Multiply out to get:

24 + 24x = 20 + 30 x

Combine like terms to get:

4 = 6x

Divide by 6 to get 4/6 = x. So, 2/3 = x.

Let me know if you have questions,

Tatiana
Tatiana,

I got this question wrong as well. the main reason is I set the equation wrong. My equation is 4+6x-1/5(4+6x)=4+4x. The question says the tree was 1/5 taller than it was at the end of the 4th year. That is why I set the equation this way. Howwever, I don't get x=any answer choice, instead I got x=1.

so would you please explain how I initially set the quation wrong. I think 1/5 taller can mean minus right? I try to avoid making the mistake again on my gmat test. Help please.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1