Sandra worked 6.2 hours on wednesday,5.5 hours on thursday, and 3.5 hours on friday. what is the mean number of hours she worked over the three day period, to the nearest hour?

Traffic on saturday, it took ms. torres 24 minutes to drive 20 miles from her home to her office. during friday's rush hour, it took 75 minutes to drive the same distance. a. what was ms. torres's average speed in miles per hour on saturday? b. what was her average speed in miles per hour on friday?