Physics homework help

Physics homework help. Julie drives 138 mi to Grandmothers house. On the way to Grandmothers, Julie drives half the distance at 34 mph and half the distance at 59 mph. On her return trip, she drives half the time at 59 mph and half the time at 34 mph. What is Julies average speed on the way to Grandmothers house?

Physics homework help