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PS: Mr. & Mrs. Smith

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VP
VP
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Joined: 06 Jun 2004
Posts: 1059
Location: CA
Followers: 2

Kudos [?]: 55 [0], given: 0

PS: Mr. & Mrs. Smith [#permalink] New post 06 Dec 2005, 00:03
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

100% (02:23) correct 0% (00:00) wrong based on 1 sessions
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Here is a tribute question to the movie.... :lol:

After Mr. Smith worked 8 hours to clean the garage, Mrs. Smith joined him and they finished the job in 2 hours. If Mr. Smith can clean the garage in 24 hours without the help of Mrs. Smith, how long would it take Mrs. Smith alone to clean the garage?

A. 24/7 hours
B. 12/5 hours
C. 7/4 hours
D. 16/3 hours
E. 17/2 hours
Director
Director
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Joined: 09 Jul 2005
Posts: 595
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Kudos [?]: 30 [0], given: 0

 [#permalink] New post 06 Dec 2005, 03:58
x= Mr.Smith rate
y= Mrs.Smith rate

10x+2y=1 job
24x=1 job

x=1/24

--->y=7/24 job/hours

Therefore, it takes 24/7 hours to do one job. A
SVP
SVP
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Joined: 16 Oct 2003
Posts: 1813
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 [#permalink] New post 07 Dec 2005, 18:53
A

In 2 hrs Brad did 1/12 of the job so Angelina did 2/3 - 1/12 so she will take 24/7 to do 7/12 of the job
  [#permalink] 07 Dec 2005, 18:53
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PS: Mr. & Mrs. Smith

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