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07 Oct 2025, 09:57
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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:
15%
(low)
Question Stats:
76% (01:21) correct
23% (01:49) wrong based on 13 sessions
History
Date
Time
Result
Not Attempted Yet
Zoe needs to drive 879 miles in 24 hours. She will need seven rest breaks of a half hour each, during which she will not be driving. Approximately what speed, in miles per hour, will she need to average during the periods when she is driving to finish the journey in time?
A. 40
B. 41
C. 42
D. 43
E. 44
A. 40
B. 41
C. 42
D. 43
E. 44
11 Oct 2025, 04:42
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Official Explanation
Deduct the time of her rest breaks, 7 × .5 = 3.5 hours, from the 24 hours that she has available. 24 – 3.5 = 20.5 hours. Then her average rate will be the distance traveled, 879 miles, divided by the time spent traveling, 20.5 hours.
\(\frac{879}{20.5}\) [miles] = 43 miles/hour
Answer: D
Deduct the time of her rest breaks, 7 × .5 = 3.5 hours, from the 24 hours that she has available. 24 – 3.5 = 20.5 hours. Then her average rate will be the distance traveled, 879 miles, divided by the time spent traveling, 20.5 hours.
\(\frac{879}{20.5}\) [miles] = 43 miles/hour
Answer: D
