posted by gigi .
A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 40.0 min at 85.0 km/h, 12.0 min at 95 km/h, and 35.0 min at 30.0 km/h, and spends 35.0 min eating lunch and buying gas. Determine the average speed for the trip?
Use the same method as this question's answer. The numbers are different.
Add the non-driving time to the driving time and convert to hours. Then divide the total distance by that total time in hours.
done it so many times am so confuse!!!
Why are you using 1.1083 hr for total time? You already computed 19.483 hr, which should have been 1.9483 hr.