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# Walk

Author Message
Director
Joined: 01 Apr 2008
Posts: 875

Kudos [?]: 843 [0], given: 18

Name: Ronak Amin
Schools: IIM Lucknow (IPMX) - Class of 2014

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24 Aug 2009, 01:57
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 100% (01:48) wrong based on 3 sessions

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This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Tom and Linda stand at point A. Linda begins to walk in a straight line away from Tom at a constant rate of 2 miles per hour. One hour later, Tom begins to jog in a straight line in the exact opposite direction at a constant rate of 6 miles per hour. If both Tom and Linda travel indefinitely, what is the positive difference, in minutes, between the amount of time it takes Tom to cover the exact distance that Linda has covered and the amount of time it takes Tom to cover twice the distance that Linda has covered?

A 60
B 72
C 84
D 90
E 120

Kudos [?]: 843 [0], given: 18

Senior Manager
Joined: 27 May 2009
Posts: 268

Kudos [?]: 529 [0], given: 18

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24 Aug 2009, 02:09
IMO D:

Toms distance=6t
linda's distnce = 2(t+1)

they are equal

so t comes out to be 30 mins or 1/2

when tom will cover twice the difference....

6t= 2 *2(t+1)

t= 120 mins or 2 hours

thus differnce between bot the t's would be 90 mins or 3/2 hours...

Pls correct me if i wrong............

Kudos [?]: 529 [0], given: 18

Manager
Joined: 28 Jul 2009
Posts: 123

Kudos [?]: 90 [0], given: 12

Location: India
Schools: NUS, NTU, SMU, AGSM, Melbourne School of Business

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24 Aug 2009, 03:07
rohansherry wrote:
IMO D:

Toms distance=6t
linda's distnce = 2(t+1)

they are equal

so t comes out to be 30 mins or 1/2

when tom will cover twice the difference....

6t= 2 *2(t+1)

t= 120 mins or 2 hours

thus differnce between bot the t's would be 90 mins or 3/2 hours...

Pls correct me if i wrong............

Bingo.
Tom starts when Linda is 2 miles away. Tom's speed is 6mph. Therefore, in 30 mins, both will be 3 miles apart frm A. (Same Distance)

After 120 mins(2 hours), Tom would have covered double the distance of Linda.

Positive Difference : 120-30 = 90 !!
_________________

GMAT offended me. Now, its my turn!
Will do anything for Kudos! Please feel free to give one.

Kudos [?]: 90 [0], given: 12

Re: Walk   [#permalink] 24 Aug 2009, 03:07
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