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.
A boot travel with a speed
[#permalink]
14 Apr 2021, 05:40
14 Apr 2021, 05:40
1
Expert Reply
12
Bookmarks
00:00
Question Stats:
62% (02:55) correct
37% (02:52) wrong based on 53 sessions
Hide Show timer Statistics
A boot travel with a speed of 13 miles/hour in still water. If the ratio of the speed of the boat upstream to the speed of the boat downstream is 4:9, how much longer does it take the boat to travel 60 miles upstream than it takes to travel 60 miles downstream ??
A. 3 hours and 20 minutes
B. 5 hours
C. 4 hours and 30 minutes
D. 7 hours
E. 4 hours and 10 minutes
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
A. 3 hours and 20 minutes
B. 5 hours
C. 4 hours and 30 minutes
D. 7 hours
E. 4 hours and 10 minutes
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
Re: A boot travel with a speed
[#permalink]
14 Apr 2021, 07:29
14 Apr 2021, 07:29
5
1
1
Bookmarks
Speed of boat in still water = 13mph
Ratio of upstream & downstream = 4:9
Important :
Upstream speed = speed of boat - speed of stream
Downstream speed = speed of boat + speed of stream
Let's take speed of stream = \(x\)
Upstream speed = \(13 - x\)
Downstream speed = \(13 + x\)
Ratio = \(\frac{13-x}{13+x}\) = \(\frac{4}{9}\)
By solving, \(x = 5\)
Upstream speed = 8 mph & downstream speed = 18 mph
Time for 60 miles upstream = \(\frac{60}{8}\) = 7 Hours 30 mins
Time for 60 miles downstream = \(\frac{60}{18}\) = 3 Hours 20 mins
Diff = 4 Hours 10 minutes
Answer E
Ratio of upstream & downstream = 4:9
Important :
Upstream speed = speed of boat - speed of stream
Downstream speed = speed of boat + speed of stream
Let's take speed of stream = \(x\)
Upstream speed = \(13 - x\)
Downstream speed = \(13 + x\)
Ratio = \(\frac{13-x}{13+x}\) = \(\frac{4}{9}\)
By solving, \(x = 5\)
Upstream speed = 8 mph & downstream speed = 18 mph
Time for 60 miles upstream = \(\frac{60}{8}\) = 7 Hours 30 mins
Time for 60 miles downstream = \(\frac{60}{18}\) = 3 Hours 20 mins
Diff = 4 Hours 10 minutes
Answer E
General Discussion
Re: A boot travel with a speed
[#permalink]
22 Oct 2023, 05:09
22 Oct 2023, 05:09
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.
