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

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

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27 Oct 2008, 20:46
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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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"You have to find it. No one else can find it for you." - Bjorn Borg

Kudos [?]: 708 [0], given: 1

Current Student
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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..

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Director
Joined: 23 May 2008
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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

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VP
Joined: 05 Jul 2008
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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

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Senior Manager
Joined: 21 Apr 2008
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28 Oct 2008, 16:29
Another A
1/(1/16+1/12) = 48/7 = 6 6/7

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VP
Joined: 30 Jun 2008
Posts: 1034

Kudos [?]: 708 [0], given: 1

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28 Oct 2008, 21:26
OA is A ..... I had done some stupid mistake
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"You have to find it. No one else can find it for you." - Bjorn Borg

Kudos [?]: 708 [0], given: 1

Re: PS : MANUSCRIPT   [#permalink] 28 Oct 2008, 21:26
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