ari bobby and cathy each went for a walk yesterday afternoon ari walked 1 1/2 mi at a constant speed of 1 1/8 bobby walked 2 3/4 miles at a constant speed 2 1/2 miles hours Cathy walk for 1 hr and 7 min at a constant of speed 1 1/8 miles of hour. list 3 people in order of the times they spent walking from least time to greatest time.