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# A certain train traveled from Station A to Station B. Was the train's

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Manager
Joined: 18 Feb 2015
Posts: 82
A certain train traveled from Station A to Station B. Was the train's  [#permalink]

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15 Aug 2016, 08:09
4
10
00:00

Difficulty:

25% (medium)

Question Stats:

76% (01:56) correct 24% (01:52) wrong based on 344 sessions

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A certain train traveled from Station A to Station B. Was the train's average speed on the trip less than 110 km per hour? (1km = 1000m)

(1) The train's average speed on the trip was greater than 25 meters per second.
(2) The train's average speed on the trip was less than 30 meters per second.
Manager
Joined: 15 Mar 2015
Posts: 109
Re: A certain train traveled from Station A to Station B. Was the train's  [#permalink]

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15 Aug 2016, 08:31
1
Writing on My phone so apologies for not writing down actual numbers.

(1) speed iS higher than some number less than 110km/h. Allows for yes and no as an answer to the Q. Not sufficient.

(2) speed is lower than some number less than 110km/h. Clearly the speed can not be above 110km/h. Sufficient.

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Intern
Joined: 17 Mar 2016
Posts: 14
Location: Singapore
GPA: 3.5
WE: Business Development (Energy and Utilities)
Re: A certain train traveled from Station A to Station B. Was the train's  [#permalink]

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17 Aug 2016, 00:21
Though easy at a glance, these kind of questions are super dangerous if throw at 35-37 slot, when time is short & tendency to undermine a question is high....
Loved the question though. +1 for B
Intern
Joined: 25 Jul 2016
Posts: 7
GMAT 1: 740 Q50 V40
Re: A certain train traveled from Station A to Station B. Was the train's  [#permalink]

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15 Sep 2016, 03:52
1
3
HarveyKlaus wrote:
A certain train traveled from Station A to Station B. Was the train's average speed on the trip less than 110 km per hour? (1km = 1000m)

(1) The train's average speed on the trip was greater than 25 meters per second.
(2) The train's average speed on the trip was less than 30 meters per second.

Convert 110km/h in meters per second => (110*1000m)/3600seconds=110000/3600 ~ 30,6 m/s

So the questions is: Was the train's average speed less than 30,6m/s?

(1): Speed>25m/s. Not sufficient, it could be 26m/s when the answer is YES, or 35 m/s which means NO.

(2) Less than 30m/s. Sufficient, as 30m/s < 30,6 m/s so the train's speed was less than 30,6m/s.

Non-Human User
Joined: 09 Sep 2013
Posts: 13277
Re: A certain train traveled from Station A to Station B. Was the train's  [#permalink]

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05 Sep 2019, 22:24
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Re: A certain train traveled from Station A to Station B. Was the train's   [#permalink] 05 Sep 2019, 22:24
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# A certain train traveled from Station A to Station B. Was the train's

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