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.
2 Trains Running Problem
[#permalink]
10 Apr 2023, 10:19
10 Apr 2023, 10:19
1
Bookmarks
00:00
Question Stats:
0% (00:00) correct
100% (02:31) wrong based on 1 sessions
Hide Show timer Statistics
A company runs 2 trains every 60 minutes to London Victoria and 4 trains every 60 minutes to London Charing Cross from Orpingdon railway station (in southeast London), both at equally spaced intervals. Assuming there are no disruptions and that it takes no time for passengers to board and depart each train, which of the following is true?
A) A train to London Victoria and a train to London Charing Cross will meet at the station every 30 minutes or not meet at all.
B) A train to London Victoria and a train to London Charing Cross will meet at the station every 15 minutes or not meet at all.
C) A train to London Victoria and a train to London Charing Cross will meet at the station every 30 minutes or 60 minutes.
D) A train to London Victoria and a train to London Charing Cross will meet at the station every 15 minutes or 60 minutes.
I selected C, but the correct answer is A. This was from PrepSwift (GregMat). I solved this relatively easy problem as 30 minutes, but I selected C thinking they would also meet every 60 minutes. Is there something I am missing?
A) A train to London Victoria and a train to London Charing Cross will meet at the station every 30 minutes or not meet at all.
B) A train to London Victoria and a train to London Charing Cross will meet at the station every 15 minutes or not meet at all.
C) A train to London Victoria and a train to London Charing Cross will meet at the station every 30 minutes or 60 minutes.
D) A train to London Victoria and a train to London Charing Cross will meet at the station every 15 minutes or 60 minutes.
I selected C, but the correct answer is A. This was from PrepSwift (GregMat). I solved this relatively easy problem as 30 minutes, but I selected C thinking they would also meet every 60 minutes. Is there something I am missing?
Re: 2 Trains Running Problem
[#permalink]
10 Apr 2023, 10:30
10 Apr 2023, 10:30
Expert Reply
a question conceived for the GRE should have 5 options and NOT for.
Also in the question is given only the time of the departure of the train but not the distance or a velocity
Kinda confusing
Also in the question is given only the time of the departure of the train but not the distance or a velocity
Kinda confusing
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Re: 2 Trains Running Problem
[#permalink]
11 Apr 2023, 06:58
11 Apr 2023, 06:58
1
redeemed545 wrote:
A company runs 2 trains every 60 minutes to London Victoria and 4 trains every 60 minutes to London Charing Cross from Orpingdon railway station (in southeast London), both at equally spaced intervals. Assuming there are no disruptions and that it takes no time for passengers to board and depart each train, which of the following is true?
A) A train to London Victoria and a train to London Charing Cross will meet at the station every 30 minutes or not meet at all.
B) A train to London Victoria and a train to London Charing Cross will meet at the station every 15 minutes or not meet at all.
C) A train to London Victoria and a train to London Charing Cross will meet at the station every 30 minutes or 60 minutes.
D) A train to London Victoria and a train to London Charing Cross will meet at the station every 15 minutes or 60 minutes.
I selected C, but the correct answer is A. This was from PrepSwift (GregMat). I solved this relatively easy problem as 30 minutes, but I selected C thinking they would also meet every 60 minutes. Is there something I am missing?
A) A train to London Victoria and a train to London Charing Cross will meet at the station every 30 minutes or not meet at all.
B) A train to London Victoria and a train to London Charing Cross will meet at the station every 15 minutes or not meet at all.
C) A train to London Victoria and a train to London Charing Cross will meet at the station every 30 minutes or 60 minutes.
D) A train to London Victoria and a train to London Charing Cross will meet at the station every 15 minutes or 60 minutes.
I selected C, but the correct answer is A. This was from PrepSwift (GregMat). I solved this relatively easy problem as 30 minutes, but I selected C thinking they would also meet every 60 minutes. Is there something I am missing?
If the 2 trains to London Victoria to leave at XX:11 and XX:41, and the 4 trains to London Charing Cross leave at XX:00, XX:15, XX:30 and XX:45, then the trains will never meet.
So, we can eliminate C and D.
If the 2 trains to London Victoria to leave at XX:15 and XX:45, and the 4 trains to London Charing Cross leave at XX:00, XX:15, XX:30 and XX:45, then the trains will meet every 30 minutes.
Answer: A
