Question

A map has a scale of 1 : 20,000. The real-life distance between two schools is 8 km. What is the distance between the two schools on the map? Give your answer in cm.

Answer 1

40 cm

Explanation:

1 km = 10^5 cm, so 8 km = 8×10^5 cm

The map distance is 1/20,000 = 5×10^-5 of the real distance, so the map distance is ...

(5×10^-5)(8×10^5 cm) = 40 cm