John left his house in irvine at 8: 35 am to drive to a meeting in los angeles, 45 miles away. he arrived at the meeting at 9: 50. at 3: 30 pm, he left the meeting and drove home. he arrived home at 5: 18.
a what was his average speed on the drive from irvine to los angeles?
b what was his average speed on the drive from los angeles to irvine?
c what was the total time he spent driving to and from this meeting?
d john drove a total of 90 miles roundtrip. find his average speed. (round to the nearest tenth.)