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15 Jan 2024, 02:30
Kudos
Bookmarks
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
80% (01:34) correct
20%
(02:01)
wrong
based on 109
sessions
History
Date
Time
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Not Attempted Yet
Machine A can complete a job in 24 hours and Machine B can do the same job at 2/3 of the rate of Machine A. After Machine A works alone for 8 hours, Machine B completes the rest of the job. How many hours does Machine B work alone?
A. 12 hours
B. 16 hours
C. 24 hours
D. 28 hours
E. 32 hours
A. 12 hours
B. 16 hours
C. 24 hours
D. 28 hours
E. 32 hours
Machine A can do a job in 24 hours at a constant rate. If Machine A does the job for 8 hours and Machine B does the rest of the job, which works at 2/3 constant rate of Machine A. How long will it take for Machine B alone to do the rest of the job?
15 Jan 2024, 03:05
Kudos
Bookmarks
Bunuel
OA is C
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15 Jan 2024, 07:59
Kudos
Bookmarks
Bunuel
LEt the total work be 72 Units....
Efficiency of A is 3 & Efficiency of B is 2
Work done by A in 8 Hours is 24 units thus, 48 Units...
Time required by B is 48/2 = 24 Hours, Answer will be (C)
