Answer:
x=42 km
Step-by-step explanation:
The scale of the map is 0.5 cm : 3 km, which means that for every 0.5 cm on the map, it represents 3 km in reality.
Given that the two cities are 7 cm apart on the map, we can set up a proportion to find the actual distance:
0.5cm/0.3 km= 7cm/x
let's solve for x, which represents the actual distance between the two cities:
x= 7 cm×3 km/0.5 cm
x=7×3×2 km
x=42 km
