Last visit was: 21 Apr 2026, 12:35 It is currently 21 Apr 2026, 12:35
Close
GMAT 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

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Close
Request Expert Reply
Confirm Cancel
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 21 Apr 2026
Posts: 109,729
Own Kudos:
810,449
 [4]
Given Kudos: 105,798
Products:
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 109,729
Kudos: 810,449
 [4]
2
Kudos
Add Kudos
2
Bookmarks
Bookmark this Post
avatar
Basavaraju
Joined: 11 Feb 2018
Last visit: 07 Oct 2020
Posts: 16
Own Kudos:
Given Kudos: 29
Posts: 16
Kudos: 4
Kudos
Add Kudos
Bookmarks
Bookmark this Post
avatar
RupamPaul13
Joined: 08 Apr 2019
Last visit: 03 Nov 2020
Posts: 24
Own Kudos:
9
 [1]
Given Kudos: 43
Location: India
GMAT 1: 700 Q50 V34
GMAT 1: 700 Q50 V34
Posts: 24
Kudos: 9
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
avatar
menonrit
Joined: 07 May 2018
Last visit: 07 Jul 2019
Posts: 33
Own Kudos:
Given Kudos: 12
Posts: 33
Kudos: 8
Kudos
Add Kudos
Bookmarks
Bookmark this Post
You know that the area of the rectangular flower bed is 2,400 square feet. So if the flower bed is a feet long and b feet wide, then ab = 2,400. If the side of the flower bed that is bordered by the walkway is one of the sides that are b feet long, then the total length of the three sides of the flower bed bordered by the fence is 2a + b feet. Since you are given that the total length of the
fence is 140 feet, it follows that 2a + b = 140. Since ab = 2,400, you can substitute 2400a2400a for b
in the equation 2a + b = 140 to get the equation 2a+2400a=1402a+2400a=140. It follows that 2a2+2400=140a2a2+2400=140a, or a2−70a+1200=0a2−70a+1200=0.

When you solve this equation for a (either by factoring or by using the quadratic formula), you get a = 30 or a = 40. If a = 30, then
b=240030=80b=240030=80; if a = 40, then b=240040=60b=240040=60. So the possible lengths of the sides are 30, 40, 60, and 80. Thus the correct answer is E.
User avatar
bumpbot
User avatar
Non-Human User
Joined: 09 Sep 2013
Last visit: 04 Jan 2021
Posts: 38,953
Own Kudos:
Posts: 38,953
Kudos: 1,117
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Automated notice from GMAT Club BumpBot:

A member just gave Kudos to this thread, showing it’s still useful. I’ve bumped it to the top so more people can benefit. Feel free to add your own questions or solutions.

This post was generated automatically.
Moderators:
Math Expert
109729 posts
Tuck School Moderator
853 posts