Question

the scale of a map 1 cm : 5km The distance between two cities is 112 km How far apart are they on a map?

Answer 1

22.4 cm

Explanation:

If 1 cm = 5 km then....

Simply divide by 5:

112 / 5 = 22.4!

:)

Answer 2

22.4 cm

Explanation:

We can use proportions to solve. Put the distance on the map over the distance in real life.

1 cm x cm

------------ = --------------

5 km 112 km

Using cross products

1 * 112 = 5x

Divide by 5

112/5 = 5x/5

22.4 =x