Question

Find the actual distance represented by 1 cm to write the scale of a map with key 2/5 cm =8 km

Answer 1

1 cm = 20 km

Explanation:

Starting with what we know:

2/5 cm = 8 km

Need to change the left side to a 1. So multiply both sides by 5/2

5/2 × 2/5 = 8 × 5/2

1 cm = 40/2 km

1 cm = 20 km