average speed=distance/time
71.2=(92.5*Timedriving)/(timedriving+1/3)
solve for time driving, then add 20 min for the total time (or 1/3 hour)
how far? 92.5*timedriving
A person takes a trip, driving with a constant speed of 92.5 km/h except for a 20.0 min rest stop. If the person's average speed is 71.2 km/h, how much time is spent on the trip and how far does the person travel?
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