A walked 30m toward north, took left turn and walked 20m. He took a left turn and walked 40m. He took a left turn and walked 20m. He again took a left turn and walked 2m. How far was he from the starting point?
5m
8m
5m
3m
7m
Solution
Distance$ AF = AE - EF$
$= 10 - 2 = 8m$