Question

Rashmi has a road map with the scale of 1cm representing 18km. She drives on a road for 72km. What would be her distance covered in the map . (Do it using direct proportion)

Answer 1

Answer: 4 cm

Step-by-step explanation:

Rashmi covers 1 cm on the map when she covers 18 km on road.

Let the distance covered on map be x cm when she covers 72 km on road.

Thus,

$\begin{aligned}\frac{1}{18}&=\frac{x}{72}\\x&=72\times\frac{1}{18}\\&=4\,\rm{cm}\end{aligned}$