Question

A man drove his car northward,then turned left and drove 10km and again turned left and drove 20km.He found himself 10km west of his starting point.How far did he drive northward initially?

Answer 1

good grief, this is the 5th time the same question has been asked, and it has been answered.
Look at the Related Questions below

Answer 2

30

Answer 3

Here is a related question.

A man left his house and walked 5 miles south, then 5 miles east, then 5 miles north, at which time he was back at his house, and a bear was trying to get in. What color was the bear?