Answer:
C. 50 km
Step-by-step explanation:
The scale on the map is,
1 cm : 20 km,
That is, the ratio of the scaled distance and actual distance = \(\frac{1}{20}\)
Let x be the actual distance between the two cities which are 2.5 cm apart on the map,
So, the ratio of scaled distance and actual distance = \(\frac{2.5}{x}\)
\(\implies \frac{1}{20}=\frac{2.5}{x}\)
\(x=20\times 2.5\)
\(x=50\)
Hence, the actual distance between the cities is 50 km.
Option 'C' is correct.
