Question

What was the hiker's average velocity during part C of the hike?

In Part A, a hiker travels six kilometers east from eight to nine a.m. In Part B, a hiker travels four kilometers south from nine until nine-forty-five a.m. In Part C, a hiker travels six kilometers west from nine-forty-five to ten-forty-five a.m. In Part D, a hiker travels eight kilometers north from ten-forty five a.m. to twelve-thirty p.m.