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# On a partly cloudy day, Derek decides to walk back from work. When it

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Intern
Joined: 10 Dec 2016
Posts: 14
On a partly cloudy day, Derek decides to walk back from work. When it  [#permalink]

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11 Mar 2018, 20:37
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 100% (03:50) wrong based on 2 sessions

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On a partly cloudy day, Derek decides to walk back from work. When it is sunny, he walks at a speed of s miles/hr (s is an integer) and when it gets cloudy, he increases his speed to (s + 1) miles/hr. If his average speed for the entire distance is 2.8 miles/hr, what fraction of the total distance did he cover while the sun was shining on him?

A) 1/4

B) 4/5

C) 1/5

D) 1/6

E) 1/7

Can anyone please explain the approach and solution ?

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Math Expert
Joined: 02 Sep 2009
Posts: 52359
Re: On a partly cloudy day, Derek decides to walk back from work. When it  [#permalink]

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11 Mar 2018, 20:48
sekharm2389 wrote:
On a partly cloudy day, Derek decides to walk back from work. When it is sunny, he walks at a speed of s miles/hr (s is an integer) and when it gets cloudy, he increases his speed to (s + 1) miles/hr. If his average speed for the entire distance is 2.8 miles/hr, what fraction of the total distance did he cover while the sun was shining on him?

A) 1/4

B) 4/5

C) 1/5

D) 1/6

E) 1/7

Can anyone please explain the approach and solution ?

--== 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.

_________________
Re: On a partly cloudy day, Derek decides to walk back from work. When it &nbs [#permalink] 11 Mar 2018, 20:48
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