GRE Prep Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
The length of a rectangle is increased by 25%. By what perce
[#permalink]
23 Mar 2019, 08:42
23 Mar 2019, 08:42
Expert Reply
1
Bookmarks
00:00
Question Stats:
89% (00:47) correct
10% (00:49) wrong based on 28 sessions
Hide Show timer Statistics
The length of a rectangle is increased by 25%. By what percentage should the width be decreased so that the area of the rectangle remains unchanged?
(A) 20
(B) 25
(C) 30
(D) 33.33
(E) 50
(A) 20
(B) 25
(C) 30
(D) 33.33
(E) 50
Target Test Prep Representative
Joined: 12 Sep 2018
Status:Founder & CEO, Target Test Prep
Affiliations: Target Test Prep
Posts: 2097
Given Kudos: 5
Re: The length of a rectangle is increased by 25%. By what perce
[#permalink]
04 Apr 2019, 17:30
04 Apr 2019, 17:30
1
1
Expert Reply
Carcass wrote:
The length of a rectangle is increased by 25%. By what percentage should the width be decreased so that the area of the rectangle remains unchanged?
(A) 20
(B) 25
(C) 30
(D) 33.33
(E) 50
(A) 20
(B) 25
(C) 30
(D) 33.33
(E) 50
We can let the original length = 4, and the original width = 10.
So the original area is 40.
When the length increases by 25% we have 4 x 1.25 = 5
Thus, for the area to remain 40, the width must be 8.
Since (8 - 10)/10 x 100 = -20, we see that 8 is 20 percent less than 10. In other words, the width has to decrease by 20%.
Answer: A
Re: The length of a rectangle is increased by 25%. By what perce
[#permalink]
01 Feb 2025, 02:06
01 Feb 2025, 02:06
Hello from the GRE Prep Club BumpBot!
Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).
Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).
Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
