Considering the turning point as the starting point and both facing north, we ignore the initial 50 meters.

X moves 60 meters East and then 50 meters South, while Y moves 40 meters West and then 50 meters South.

We calculate the distance by only considering the horizontal movement, which is 60 meters (East) + 40 meters (West). The 50 meters South can be ignored as it is common for both paths, having been already accounted for in the initial position.