Point A is located 5 miles to the west of Point B. At the exact moment that an eastward bicycle passes Point B, an eastward train passes Point A. The speed of the bicycle is 6 mph. The head of the train crosses the bicycle after exactly 20 minutes. Assuming the speeds of the train and the bicycle are constant throughout, determine the following: A. Relative velocity of the train with respect to the bicycle B. Relative velocity of a monkey with respect to a stationary observer on the ground if the monkey is running across the roof of the train westward at a speed of 9 mph.