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The Speed of a Car during the second hour of its Journey is thrice

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Senior Manager
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Joined: 31 Jul 2017
Posts: 477
Location: Malaysia
Schools: INSEAD Jan '19
GMAT 1: 700 Q50 V33
GPA: 3.95
WE: Consulting (Energy and Utilities)
The Speed of a Car during the second hour of its Journey is thrice  [#permalink]

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New post 17 Nov 2017, 08:06
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67% (03:20) correct 33% (02:54) wrong based on 3 sessions

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The Speed of a Car during the second hour of its Journey is thrice that in the first hour. Also, its third hours speed is the average speed of the first two hours. Had the car travelled at the second hour speed during all the first three hours, then it would have travelled 150 km more. Find the percentage reduction in time in the second case for the first three hours.

a) 33.33%
b) 40%
c) 25%
d) 50%
e) 30%

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Senior Manager
Senior Manager
avatar
P
Joined: 31 Jul 2017
Posts: 477
Location: Malaysia
Schools: INSEAD Jan '19
GMAT 1: 700 Q50 V33
GPA: 3.95
WE: Consulting (Energy and Utilities)
Re: The Speed of a Car during the second hour of its Journey is thrice  [#permalink]

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New post 17 Nov 2017, 08:08
rahul16singh28 wrote:
The Speed of a Car during the second hour of its Journey is thrice that in the first hour. Also, its third hours speed is the average speed of the first two hours. Had the car travelled at the second hour speed during all the first three hours, then it would have travelled 150 km more. Find the percentage reduction in time in the second case for the first three hours.

a) 33.33%
b) 40%
c) 25%
d) 50%
e) 30%


Hi All,

Can you please help me to solve this question. Had earlier posted this question in Quant PS section but dont know how it disappeared.

--== Message from the GMAT Club Team ==--

THERE IS LIKELY A BETTER DISCUSSION OF THIS EXACT QUESTION.
This discussion does not meet community quality standards. It has been retired.


If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.

_________________

If my Post helps you in Gaining Knowledge, Help me with KUDOS.. !!

GMAT Club Bot
Re: The Speed of a Car during the second hour of its Journey is thrice &nbs [#permalink] 17 Nov 2017, 08:08
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The Speed of a Car during the second hour of its Journey is thrice

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