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01 Oct 2020, 04:00
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
85% (01:46) correct
15%
(02:25)
wrong
based on 275
sessions
History
Date
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Not Attempted Yet
A group of 8 machines that work at the same constant rate can complete 14 jobs in 7 hours. How many hours would it take 17 of these machines to complete 34 of these jobs?
A. 4
B. 6
C. 8
D. 12
E. 16
A. 4
B. 6
C. 8
D. 12
E. 16
01 Oct 2020, 04:07
Kudos
Bookmarks
C
M1D1H1/W1 = M2D2H2/W2 ; where M = number of men, D = no. of days, H = Number of hours per day
==> 8x7/14 = hx17/34
==> h = 8
M1D1H1/W1 = M2D2H2/W2 ; where M = number of men, D = no. of days, H = Number of hours per day
==> 8x7/14 = hx17/34
==> h = 8
01 Oct 2020, 04:10
Kudos
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8 Machines 14jobs in 7hrs
1 M 14 J in 7 x 8 hr
1M 1 J in (7 x 8) / 14 hrs
17M 1 J in (7 x 8) / (14 x 17)hrs
17M 34 J in (7 x 8 x 34)/(14 x 17) = 8hrs
ans. C IMO.
1 M 14 J in 7 x 8 hr
1M 1 J in (7 x 8) / 14 hrs
17M 1 J in (7 x 8) / (14 x 17)hrs
17M 34 J in (7 x 8 x 34)/(14 x 17) = 8hrs
ans. C IMO.
