A lamp post 3m high is 6m from a wall. A 2m man tall is walking directly from the post toward at 2.5m/s. How fast is his 1.5 from the wall

Answer 1

Question makes no sense.
It appears whole words are missing.

Answer 2

A lamp post 3m high is 6m from a wall. A 2m man tall is walking directly from the post toward at 2.5m/s. How fast is his 1.5 from the wall

Answer 3

The corrections are= "How fast is his shadow moving up the wall when he is 1.5m from the wall". I encountered the question, but still don't know the answer.