## Task 5

A section of the fence is being renewed. At regular intervals of $4 \mathrm{~m}$, one post is set. In total, 10 new posts are set. How far apart are the first and the tenth post?
The posts are $36 \mathrm{~m}$ apart.

### 13.9 18th Olympiad 1980

### 13.9.1 1st Round 1980, Class 4