I wrote 'sec' there, but this is also 'sec' so now you have seconds over seconds, those cancel out so your displacement is going to be equal to 5 times 60 and then your units left are meters all the time units have canceled out and it's meters to the south and this is equal to...5 times 60 is 300 meters to the south and we are done, that's how much she has been displaced if they just wanted the distance, you can say that she traveled 300 meters just that part, the magnitude of the displacement... ...that is the distance that she traveled