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# George takes 8 hours to copy a 50 page manuscript while

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VP
Joined: 30 Jun 2008
Posts: 1019
George takes 8 hours to copy a 50 page manuscript while [#permalink]

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27 Oct 2008, 20:46
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 6 sessions

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George takes 8 hours to copy a 50 page manuscript while Sonya can copy the same in 6 hours. How many hours would it take them to copy a 100 page manuscript, if they work together ?

A) 6$$\frac{6}{7}$$
B) 9
C) 9$$\frac{5}{7}$$
D) 10$$\frac{2}{3}$$
E) 14

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Current Student
Joined: 28 Dec 2004
Posts: 3311
Location: New York City
Schools: Wharton'11 HBS'12
Re: PS : MANUSCRIPT [#permalink]

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27 Oct 2008, 21:37
i takes 16 hrs for george to print 100 pages and 12 hours for sonya

working together they will take 1/16+1/12 or 48/7 hours

A it is..
Director
Joined: 23 May 2008
Posts: 757
Re: PS : MANUSCRIPT [#permalink]

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28 Oct 2008, 15:08
50/8 + 50/6 =1/h=700/48=100pgs in 6 and 6/7 hrs

A
VP
Joined: 05 Jul 2008
Posts: 1369
Re: PS : MANUSCRIPT [#permalink]

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28 Oct 2008, 15:54
another A

16 hrs -100 pages 12 hrs -100 pages

Combined rate is 700/48 pages in 1 hr.

100 pages in 48/7 hrs = 6 6/7
Senior Manager
Joined: 21 Apr 2008
Posts: 265
Location: Motortown
Re: PS : MANUSCRIPT [#permalink]

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28 Oct 2008, 16:29
Another A
1/(1/16+1/12) = 48/7 = 6 6/7
VP
Joined: 30 Jun 2008
Posts: 1019
Re: PS : MANUSCRIPT [#permalink]

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28 Oct 2008, 21:26
OA is A ..... I had done some stupid mistake

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

This is not a quality discussion. 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.

_________________

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Re: PS : MANUSCRIPT   [#permalink] 28 Oct 2008, 21:26
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# George takes 8 hours to copy a 50 page manuscript while

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