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24 Apr 2018, 06:17
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
82% (00:52) correct
18%
(01:01)
wrong
based on 141
sessions
History
Date
Time
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Not Attempted Yet
If two identical machines can complete a job in 40 hours, how long, in hours, will it take five such machines to complete the same job?
(A) 4
(B) 8
(C) 10
(D) 16
(E) 20
(A) 4
(B) 8
(C) 10
(D) 16
(E) 20
24 Apr 2018, 06:50
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Bookmarks
Bunuel
If two identical machines can complete a job in 40 hours, how long, in hours, will it take five such machines to complete the same job?
(A) 4
(B) 8
(C) 10
(D) 16
(E) 20
(A) 4
(B) 8
(C) 10
(D) 16
(E) 20
number of machines * number of hours is constant
2*40 = 5h where h is number of hours it will take 5 identical machines
h= 80/5 = 16
Hence option D = 16 is the answer.
24 Apr 2018, 07:03
Kudos
Bookmarks
Bunuel
If two identical machines can complete a job in 40 hours, how long, in hours, will it take five such machines to complete the same job?
(A) 4
(B) 8
(C) 10
(D) 16
(E) 20
(A) 4
(B) 8
(C) 10
(D) 16
(E) 20
One machine completes the job in \(80\) hours. Hence \(5\) machines complete this job in \(\frac{80}{5} = 16\) hours.
Answer: D
