Question

Rashmi has a road map with a scale of 1 cm representing 18 km. She drives on a road for 72 km. What would be her distance covered in the map?

Answer 1

Let the distance represented on the map be x cm.

The given information, in the form of a table, is as follows:

Distance covered on road in (in km)	18	72
Distance represented on map (in cm)	1	x

The distances covered on the road and represented on the map are directly proportional to each other. Therefore, we obtain

`18/1 = 72/x`

=> `x = 72/18`

=> x = 4

Hence, the distance represented on the map is 4 cm.