## 210. Math Puzzle 11/82

On a map, the 70 km distance between Karl-Marx-City and Dresden is approximately $17 \mathrm{~cm}$.

What is the scale of the map (it is known that the scale always represents a "round" value)?
The scale of the map can be calculated as follows. Length on the map : Length in nature $=\frac{0.17 \mathrm{~m}}{70000 \mathrm{~m}}=\frac{1}{410000}$

Since the scale is always a round number, only the scale 1 : 400000 is feasible.