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Answer :
Final answer:
The total distance travelled by the person is 101.76 km, while his average speed during the trip is 48.23 km/h.
Explanation:
To find the distance travelled we multiply the time spent driving by the speed at which the driving occurred. Thus, the total distance for each segment is: 39.4 min * 71.5 km/h = 47.03 km, 14.2 min * 93.7 km/h = 22.19 km, and 53.8 min * 36.3 km/h = 32.54 km. Summing these gives a total distance of 101.76 km.
To find the average speed, we divide this total distance by the total time spent (which includes time spent eating and gassing up the car). This gives: 101.76 km / (39.4 min + 14.2 min + 53.8 min + 10.3 min) in hours = 48.23 km/h.
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