Question

150 km North, 50 km North, 250 km south,​

Answer 1

It’s important to be able to visualise these motions.

I can use a scale drawing or just take my finger and trace the motion.

(If I don’t want to go the full 150km, I can go 150mm instead, or trace it on a map. That’s essentially what a map is, a scale drawing.)

The actual distance from where I started to where I end up is the answer.