NEW HERE? LEARN MORE
closeclose
Last visit was: 25 Apr 2024, 15:26 It is currently 25 Apr 2024, 15:26
Decision Tracker
My Rewards
New posts
New comers' posts

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.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel

Two points A and B are connected to each other via three paths,.......

SORT BY:
Date
Kudos
Tags:
Find Similar Topics 
Show Tags
Hide Tags
User avatar
L
EgmatQuantExpert
e-GMAT Representative
Joined: 04 Jan 2015
Posts: 3726
Own Kudos [?]: 16841 [3]
Given Kudos: 165
Send PM
Two points A and B are connected to each other via three paths,....... [#permalink] New post   21 Nov 2018, 05:03
3
Bookmarks
Expert Reply
00:00
A
B
C
D
E

Difficulty:

15% (low)

Question Stats:

82% (01:18) correct 18% (01:28) wrong based on 171 sessions
Hide Show timer Statistics
Two points A and B are connected to each other via three paths, as shown in the figure. A person needs to make a round trip from A to B and then back to A, using any of the three paths. What is the ratio of the possible total distances covered, if he never uses the same path for both onward and return journey?



    A. 20: 24: 30
    B. 20: 25: 27
    C. 22: 24: 27
    D. 22: 25: 30
    E. 22: 25: 27
ShowHide Answer
Official Answer
E
User avatar
S
vishalkazone
Manager
Manager
Joined: 08 Sep 2008
Posts: 105
Own Kudos [?]: 96 [2]
Given Kudos: 17
Location: India
Concentration: Operations, General Management
Schools: ISB '20
GPA: 3.8
WE:Operations (Transportation)
Send PM
Re: Two points A and B are connected to each other via three paths,....... [#permalink] New post   21 Nov 2018, 06:42
2
Kudos
For every path from A to B we have two path to return ( As same path cannot be used)

Case-1
Path from A to B 12 miles
Coming back either using 10 miles or 15 miles
So distance covered can be either 22 or 27 miles

Case-2
Path from A to B 10 miles
Coming back either using 12 miles or 15 miles
So distance covered can be either 22 or 25 miles

Case-3
Path from A to B 15 miles
Coming back either using 10 miles or 12 miles
So distance covered can be either 25 or 27 miles

In any case ratio of total distance covered will be 22:25:27
Answer E.
User avatar
L
EgmatQuantExpert
e-GMAT Representative
Joined: 04 Jan 2015
Posts: 3726
Own Kudos [?]: 16841 [1]
Given Kudos: 165
Send PM
Re: Two points A and B are connected to each other via three paths,....... [#permalink] New post   23 Nov 2018, 07:16
1
Kudos
Expert Reply

Solution



Given:
    • There are three paths between A and B
    • A person needs to take a round trip between A and B
    • He can use any of the three paths, but he will use different paths for onward and return journeys

To find:
    • The ratio of all the possible distances that he covers

Approach and Working:
    • Distance covered in path, I + II = 12 + 10 = 22 miles
    • Distance covered in path, II + III = 10 + 15 = 25 miles
    • Distance covered in path, I + III = 12 + 15 = 27 miles

Therefore, ratio of possible distances covered = 22: 25: 27

Hence the correct answer is Option E.

Answer: E
User avatar
L
stne
SVP
SVP
Joined: 27 May 2012
Posts: 1680
Own Kudos [?]: 1424 [0]
Given Kudos: 632
Send PM
Re: Two points A and B are connected to each other via three paths,....... [#permalink] New post   16 Nov 2020, 06:07
EgmatQuantExpert wrote:
Two points A and B are connected to each other via three paths, as shown in the figure. A person needs to make a round trip from A to B and then back to A, using any of the three paths. What is the ratio of the possible total distances covered, if he never uses the same path for both onward and return journey?



    A. 20: 24: 30
    B. 20: 25: 27
    C. 22: 24: 27
    D. 22: 25: 30
    E. 22: 25: 27


Please correct my understanding, doesn't round trip itself mean returning back. E.g. Round trip from A to B means going from A to B then returning from B to A .

So in this question when it says " Round trip from A to B and then back to A " it makes the wording confusing and redundant.

Simply saying round trip from A to B, is sufficient IMO
GMAT Club Bot
gmatclubot
Re: Two points A and B are connected to each other via three paths,....... [#permalink]
16 Nov 2020, 06:07
Moderators:
Bunuel
Math Expert
92915 posts
yashikaaggarwal
Senior Moderator - Masters Forum
3137 posts

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne
Main navigation
GMAT Resources
Partners
MBA Resources
www.gmac.com|www.mba.com | | GMAT Club Rules | Terms and Conditions