While John is traveling along a straight inter- state highway, he notices that the mile marker reads 237 km.

While John is traveling along a straight inter-state highway, he notices that the mile markerreads 237 km. John travels until he reachesthe 137 km marker and then retraces his pathto the 167 km marker.What is John’s resultant displacement fromthe 237 km marker?Answer in units of km.