A, B, C run a circular track starting from the same point : Quant Question Archive [LOCKED]
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 23 Jan 2017, 10:53

### 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

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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# A, B, C run a circular track starting from the same point

Author Message
Manager
Joined: 11 Jul 2006
Posts: 67
Followers: 1

Kudos [?]: 42 [0], given: 0

A, B, C run a circular track starting from the same point [#permalink]

### Show Tags

12 May 2007, 12:44
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

A, B, C run a circular track starting from the same point simulataneously and in the same direction at speeds of 4 km/hr, 6km/hr and 8 km/hr respectively. If the length of the track is 400 meters. When will A, B, C meet at the starting point for the first time after they started the race?

a. 1 min
b. 5 min
c. 12 min
d. 20 min
c. 24 min

_________________________________________________
In the above question, when will they meet for the 1st time after they started the race?

a. 1 min
b. 5 min
c. 12 min
d. 20 min
c. 24 min

Last edited by mbunny on 12 May 2007, 13:41, edited 1 time in total.
Director
Joined: 26 Feb 2006
Posts: 904
Followers: 4

Kudos [?]: 107 [0], given: 0

Re: Circular Track - Rate problem [#permalink]

### Show Tags

12 May 2007, 12:59
mbunny wrote:
A, B, C run a circular track starting from the same point simulataneously and in the same direction at speeds of 4 km/hr, 6km/hr and 8 km/hr respectively. If the length of the track is 400 miles. When will A, B, C meet at the starting point for the first time after they started the race?

a. 1 min
b. 5 min
c. 12 min
d. 20 min
c. 24 min

_________________________________________________
In the above question, when will they meet for the 1st time after they started the race?

a. 1 min
b. 5 min
c. 12 min
d. 20 min
c. 24 min

do you have complete question. your question seems unclear.
Manager
Joined: 11 Jul 2006
Posts: 67
Followers: 1

Kudos [?]: 42 [0], given: 0

### Show Tags

12 May 2007, 13:20
This is the complete question already.

The question is vague, so that's why I could figure out the answer.
Senior Manager
Joined: 03 May 2007
Posts: 271
Followers: 1

Kudos [?]: 11 [0], given: 0

Re: Circular Track - Rate problem [#permalink]

### Show Tags

12 May 2007, 13:28
mbunny wrote:
A, B, C run a circular track starting from the same point simulataneously and in the same direction at speeds of 4 km/hr, 6km/hr and 8 km/hr respectively. If the length of the track is 400 miles. When will A, B, C meet at the starting point for the first time after they started the race?

a. 1 min
b. 5 min
c. 12 min
d. 20 min
c. 24 min

_________________________________________________
In the above question, when will they meet for the 1st time after they started the race?

a. 1 min
b. 5 min
c. 12 min
d. 20 min
c. 24 min

I'm sorry but your question is incorrect (probably just a typo) In order to solve it you have to change 400 MILES to 400 METERS
Manager
Joined: 11 Jul 2006
Posts: 67
Followers: 1

Kudos [?]: 42 [0], given: 0

### Show Tags

12 May 2007, 13:42
I have update the orginial post to Meters. Thanks.
Senior Manager
Joined: 03 May 2007
Posts: 271
Followers: 1

Kudos [?]: 11 [0], given: 0

### Show Tags

12 May 2007, 13:43

if you draw on a piece of paper 4 circles and see the A and B are when C finishes the lap, you'll see that all of them meet after C completes 4 laps.
the length of the lap is 400 METERS so the total distance C covers is 1.6km
C is running at the speed 8km/h so time spent is 1.6/8=0.2hour or 12 minutes
Senior Manager
Joined: 03 May 2007
Posts: 271
Followers: 1

Kudos [?]: 11 [0], given: 0

### Show Tags

12 May 2007, 13:45
mbunny wrote:
I have update the orginial post to Meters. Thanks.

It happens
Intern
Joined: 24 Oct 2006
Posts: 32
Followers: 0

Kudos [?]: 0 [0], given: 0

### Show Tags

12 May 2007, 23:12
A: Runs 400 meters in (60/6000)*400 = 6 min
B: ... 4 min
C: ... 3 min

LCM of 6, 4 and 3 is 12 min, and that should be the answer.
12 May 2007, 23:12
Display posts from previous: Sort by