You begin on the first floor. You go up 5 floors, deliver a package. You go up 7 floors to deliver the next package. Then you receive a call to go down 12 floors and pick up a package to be mailed. You take the elevator 22 floors to deliver the final package.

Starting at home, emily traveled uphill to the hardware store for 606060 minutes at just 666 mph. she then traveled back home along the same path downhill at a speed of 121212 mph. what is her average speed for the entire trip from home to the hardware store and back?