The percentage time spent in waiting area by Kiley of her total travel time is 17.65%
Total travel time = (0.5 + 0.75 + 2.25 + 0.5 + 0.25) = 4.25 hours = 255 minutes
The time spent in waiting area = 45 minutes = 0.75 hours
Percentage of total travel time spent in waiting area :
(time spent in waiting area ÷ total travel time) × 100%
Percentage time spent = (45 ÷ 255) × 100%
Percentage time spent = 0.17647 × 100%
Therefore, the percentage time of total hours Kiley spent in waiting area is about 17.65%
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