At 3 p.m. a car is located 20 km south of its starting point. One hour later

Question:

At 3 p.m. a car is located 20 km south of its starting point. One hour later it is 96 km farther south. After two more hours, it is 12 km south of the original starting point.
(a) What is the displacement of the car between 3 p.m. and 6 p.m.?
(b) What is the displacement of the car from the starting point to the location at 4 p.m.?
(c) What is the displacement of the car between 4 p.m. and 6 p.m.?