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.

It appears that you are browsing the GMAT Club forum unregistered!

Signing up is free, quick, and confidential.
Join other 500,000 members and get the full benefits of GMAT Club

Registration gives you:

Tests

Take 11 tests and quizzes from GMAT Club and leading GMAT prep companies such as Manhattan GMAT,
Knewton, and others. All are free for GMAT Club members.

Applicant Stats

View detailed applicant stats such as GPA, GMAT score, work experience, location, application
status, and more

Books/Downloads

Download thousands of study notes,
question collections, GMAT Club’s
Grammar and Math books.
All are free!

Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:

Walking at 8KMPH From Point A to Point railway station, mike [#permalink]

Show Tags

09 Oct 2011, 10:53

1

This post received KUDOS

20

This post was BOOKMARKED

00:00

A

B

C

D

E

Difficulty:

45% (medium)

Question Stats:

75% (03:18) correct
25% (02:16) wrong based on 452 sessions

HideShow timer Statistics

Walking at 8KMPH From Point A to Point railway station, mike will miss the train by 5 minutes. If he walks at 10KMPH he will reach the station by 5 minutes early.What is the distance between Point A to Railway station?

Walking at 8KMPH From Point A to Point railway station, mike will miss the train by 5 minutes. If he walks at 10KMPH he will reach the station by 5 minutes early.What is the distance between Point A to Railway station?

A)9KM B)6.66KM C)7.25KM D)12.40KM E)13KM

Alternatively, don't assume any variables.

Ratio of speed in 2 cases = 8:10 = 4:5 Ratio of time in the 2 cases = 5:4 The difference between the time is total 10 mins so time taken in the two cases must be 50 min and 40 mins respectively. Distance = 8 km/hr * (50/60) hrs = 6.66 km

You will be surprised how quickly you can solve questions using ratios (and without writing anything down once you get used to it - that probably accounts for a lot of time saving)

Re: Walking at 8KMPH From Point A to Point railway station, mike [#permalink]

Show Tags

11 Aug 2014, 06:01

VeritasPrepKarishma wrote:

gopu106 wrote:

Walking at 8KMPH From Point A to Point railway station, mike will miss the train by 5 minutes. If he walks at 10KMPH he will reach the station by 5 minutes early.What is the distance between Point A to Railway station?

A)9KM B)6.66KM C)7.25KM D)12.40KM E)13KM

Alternatively, don't assume any variables.

Ratio of speed in 2 cases = 8:10 = 4:5 Ratio of time in the 2 cases = 5:4 The difference between the time is total 10 mins so time taken in the two cases must be 50 min and 40 mins respectively. Distance = 8 km/hr * (50/60) hrs = 6.66 km

You will be surprised how quickly you can solve questions using ratios (and without writing anything down once you get used to it - that probably accounts for a lot of time saving)

Walking at 8KMPH From Point A to Point railway station, mike will miss the train by 5 minutes. If he walks at 10KMPH he will reach the station by 5 minutes early.What is the distance between Point A to Railway station?

A)9KM B)6.66KM C)7.25KM D)12.40KM E)13KM

Alternatively, don't assume any variables.

Ratio of speed in 2 cases = 8:10 = 4:5 Ratio of time in the 2 cases = 5:4 The difference between the time is total 10 mins so time taken in the two cases must be 50 min and 40 mins respectively. Distance = 8 km/hr * (50/60) hrs = 6.66 km

You will be surprised how quickly you can solve questions using ratios (and without writing anything down once you get used to it - that probably accounts for a lot of time saving)

Karishma, Can you please explain how you got that the times must be 40 and 50 minutes?

Ratio of time taken is 5:4. This is a difference of 1. Actually the difference between time taken is 10 mins. This means, actual values have a multiplier of 10. So time taken must be 5*10 = 50 mins and 4*10 = 40 mins

Read up on ratio scale and actual values on the links given in the post above.
_________________

Re: Walking at 8KMPH From Point A to Point railway station, mike [#permalink]

Show Tags

19 Sep 2015, 10:26

Hello from the GMAT Club BumpBot!

Thanks to another GMAT 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.
_________________

Walking at 8KMPH From Point A to Point railway station, mike [#permalink]

Show Tags

05 Oct 2015, 20:10

[quote="VeritasPrepKarishma"][quote="gopu106"]Walking at 8KMPH From Point A to Point railway station, mike will miss the train by 5 minutes. If he walks at 10KMPH he will reach the station by 5 minutes early.What is the distance between Point A to Railway station?

Walking at 8KMPH From Point A to Point railway station, mike will miss the train by 5 minutes. If he walks at 10KMPH he will reach the station by 5 minutes early.What is the distance between Point A to Railway station?

please explain me how the time ratio is 5:4 ?

The two speeds are 8 and 10. This is a ratio of 4:5. The ratio of time taken is inverse of the ratio of speeds if distance covered is the same in two cases. So given that the distance covered is same, if ratio of speeds is 4:5, the ratio of time taken will be 5:4.

Walking at 8KMPH From Point A to Point railway station, mike will miss the train by 5 minutes. If he walks at 10KMPH he will reach the station by 5 minutes early.What is the distance between Point A to Railway station?

A)9KM B)6.66KM C)7.25KM D)12.40KM E)13KM

Since time differences given are in minutes so let's convert speed in Km per minute

8 kmph = 8/60 km per minute = (2/15) km per minute 10 kmph = 10/60 km per minute = (1/6) km per minute

Let, Time of train to depart from station = t minutes

Distance between Point A and Railway Station = Speed*Time = (2/15)*(t+5)

Distance between Point A and Railway Station = Speed*Time = (1/6)*(t-5)

i.e. (2/15)*(t+5) = (1/6)*(t-5) i.e. 12t+60 = 15t - 75

i.e. 3t = 135 i.e. t = 45 minutes

i.e. Distance = (1/6)*(t-5) = (1/6)*(45-5) = 40/6 = 20/3 Km = 6.66 Km

Perhaps I am overlooking the issue- I am making some silly mistake please correct me I am getting confused with units (km/hr & mins)

I converted 5 mins to 'hr' since the rate given is km/hr

so i got

8(t-1/12) = 10(t+1/12)

I am getting incorrect answer , please let me know how can you directly consider t+5 & t-5

Thanks in advance!!

Don't always make mathematical equation but also look at relevance of the equation formed

you formed an equation 8(t-1/12) = 10(t+1/12)

when you know speed is less (i.e.8 kmph) then time should be more (i.e. (t+1/12) ) whereas you have taken less speed and less time on one sie and more speed and more time on other side and have equated them which is not logically relevant.

Less speed will take more time and More speed will take less time to travel the same distance.

I hope this helps!!!

P.S. (Similar logical aspect of an equation/inequation are greatly helpful in topic like Inequality)
_________________

Walking at 8KMPH From Point A to Point railway station, mike [#permalink]

Show Tags

28 Jan 2016, 02:04

g106 wrote:

Walking at 8KMPH From Point A to Point railway station, mike will miss the train by 5 minutes. If he walks at 10KMPH he will reach the station by 5 minutes early.What is the distance between Point A to Railway station?

A)9KM B)6.66KM C)7.25KM D)12.40KM E)13KM

Another approach is testing the answers.

We need to find the distance that makes the difference between times 10 min.

convert speeds to km/min

S1= 2/15 & S2=1/6. To be strategic I will start by choice 'B' or 'D'

When scanning the answer all fraction is easy to recognize

Chioice B= 6.66= 6 2/3=20/3.................T1=20/3 *15/2=50 min & T2= 20/3* 6= 40 min...... Then difference is 10 min

Answer: B

gmatclubot

Walking at 8KMPH From Point A to Point railway station, mike
[#permalink]
28 Jan 2016, 02:04

Happy New Year everyone! Before I get started on this post, and well, restarted on this blog in general, I wanted to mention something. For the past several months...

It’s quickly approaching two years since I last wrote anything on this blog. A lot has happened since then. When I last posted, I had just gotten back from...

Happy 2017! Here is another update, 7 months later. With this pace I might add only one more post before the end of the GSB! However, I promised that...