Question

In a travel map guide the scale of the map is 1 ratio 100 kilometre if the distance between airport and a city centre is 4 mm on the map what is the actual distance​

Answer 1

Answer:

$1 \: cm = 10 \: mm = 100 \: km \\ so \: 4 \: mm = \frac{100 \times 4}{10} = 40 \: km$

Required Distance=40 km.