Razia spent 3 hours climbing 6 miles up a hill. She spent 2 hours coming down the hill on a different path which had a length...

Razia spent 3 hours climbing 6 miles up a hill. She spent 2 hours coming down the hill on a different path which had a length of 8 miles. For Razia's completed climb up and down the hill, what was her average speed in miles per hour?