Question

You travel 20.0 mph for 0.500 hour, 40.0 mph for 1.00 hour, 30.0 mph for 0.500 hour, and 50.0 mph for 2.00 hours. What is the average speed?

Answer 1

All you need to do here is calculate the distances traveled for each leg, add them up and and then divide that total value by the total time it took to make the trip.

If you need another hint, just say so :)