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03 Oct 2024, 03:46
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
95%
(hard)
Question Stats:
20% (03:25) correct
80% (00:50) wrong based on 5 sessions
History
Date
Time
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Not Attempted Yet
In a factory, machine A operates on a cycle of 20 hours of work followed by 4 hours of rest, and machine B operates on a cycle of 40 hours of work followed by 8 hours of rest. Last week, the two machines began their respective cycles at 12 noon on Monday and continued until 12 noon on the following Saturday. On which days during that time period was there a time when both machines were at rest?
Indicate all such days.
A. Monday
B. Tuesday
C. Wednesday
D. Tursday
E. Friday
F. Saturday
Indicate all such days.
A. Monday
B. Tuesday
C. Wednesday
D. Tursday
E. Friday
F. Saturday
17 Feb 2025, 10:28
Kudos
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OE
Both machines began their respective cycles at 12 noon on Monday and continued until 12 noon on the following Saturday. Note that 1 day has 24 hours and 2 days have 48 hours.
Machine A operates on a cycle of 20 hours of work followed by 4 hours of rest, so it was at rest from 8 o’clock in the morning until 12 noon every day from Tuesday to Saturday.
Machine B operates on a cycle of 40 hours of work followed by 8 hours of rest, so it was at rest from 4 o’clock in the morning until 12 noon on Wednesday and Friday.
Tus both machines were at rest from 8 o’clock in the morning until 12 noon on Wednesday and Friday. Te correct answer consists of Choices C and E.
Answer: C,E
Both machines began their respective cycles at 12 noon on Monday and continued until 12 noon on the following Saturday. Note that 1 day has 24 hours and 2 days have 48 hours.
Machine A operates on a cycle of 20 hours of work followed by 4 hours of rest, so it was at rest from 8 o’clock in the morning until 12 noon every day from Tuesday to Saturday.
Machine B operates on a cycle of 40 hours of work followed by 8 hours of rest, so it was at rest from 4 o’clock in the morning until 12 noon on Wednesday and Friday.
Tus both machines were at rest from 8 o’clock in the morning until 12 noon on Wednesday and Friday. Te correct answer consists of Choices C and E.
Answer: C,E
