Jesse needs to decide which metric unit he should use to weigh a bowl of books and documents.
First, think about the size and weight of the objects in the bowl.
Milligrams would be far too small of a unit. The books alone would probably weigh a few million milligrams. Even grams is really not ideal, since the total weight would be thousands of grams.
Well the displacement of milage from the 2 places if 75km however, the women and her car are in the same place so there is no displacement. But 75km is the correct mathematical answer.