Answer:
I will answer all unanswered question from the attached paper. It is listed bellow.
Explanation:
Elevation of point W is 560 meters, elevation of point X is 600 meters, and for point Y elevation is 480 meters. We know that based on the given contour interval, which is 20 meters.
Family Y took the steepest path since they have to cover 120 meters elevation difference until they reach point X. On the other side family W will cover only 40 meters elevation difference.
Also important notice is that, countour lines for Y family are denser (closer to each other) which is the proof of the steeper terrain.
