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If Mary always takes the same route to work, how long did it take Mary

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Retired Moderator
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Joined: 29 Oct 2013
Posts: 288

Kudos [?]: 489 [0], given: 197

Concentration: Finance
GPA: 3.7
WE: Corporate Finance (Retail Banking)
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If Mary always takes the same route to work, how long did it take Mary [#permalink]

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New post 18 Jan 2016, 02:16
1
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A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

74% (00:49) correct 26% (00:46) wrong based on 135 sessions

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If Mary always takes the same route to work, how long did it take Mary to get to work on Friday?

(1) It took Mary 20 minutes to get to work on Thursday.

(2) Mary's average speed on her trip to work was 25 percent greater on Thursday than it was on Friday.
[Reveal] Spoiler: OA

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My journey V46 and 750 -> http://gmatclub.com/forum/my-journey-to-46-on-verbal-750overall-171722.html#p1367876

Kudos [?]: 489 [0], given: 197

Retired Moderator
avatar
Joined: 29 Oct 2013
Posts: 288

Kudos [?]: 489 [0], given: 197

Concentration: Finance
GPA: 3.7
WE: Corporate Finance (Retail Banking)
GMAT ToolKit User
Re: If Mary always takes the same route to work, how long did it take Mary [#permalink]

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New post 18 Jan 2016, 02:21
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Either statements on their own are not suff.

Mary's speed on Thu = d/20
Mary's speed on Fri = d/t

d/20 = d/t * 1.25 --> 1/20 = 1/t * 1.25
we can calculate t. Ans C
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Please contact me for super inexpensive quality private tutoring

My journey V46 and 750 -> http://gmatclub.com/forum/my-journey-to-46-on-verbal-750overall-171722.html#p1367876

Kudos [?]: 489 [0], given: 197

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Re: If Mary always takes the same route to work, how long did it take Mary [#permalink]

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New post 11 Oct 2017, 03:18
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Re: If Mary always takes the same route to work, how long did it take Mary   [#permalink] 11 Oct 2017, 03:18
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