Question

The scale of a map is 1 : 100,000. The distance between two houses on the map is 3.2 cm. Find the actual distance, in kilometers, between the two houses?

Answer 1

The actual distance between the two houses is:

3.2 km

Explanation:

Proportions:

1cm ⇔ 100000 cm

3.2 cm ⇔ W cm

W = 3.2*100000/1

W = 320000 cm

1 km = 100000 cm

320000cm = 320000/100000 = 3.2km