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Bunuel
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Bunuel
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




This question is a part of Are You Up For the Challenge: 700 Level Questions collection.
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tbhauer
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drive time = 24 hrs - breaks = 24 - (.5*7)= 20.5 hrs driving
879 mi/20.5 hrs = 42.87 mph
Ans = D
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Under what scenario do we round? In this case I did 880(2)/40 = 44 rather than 879(2)/41, which will be the wrong answer
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