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?

• A. 4 cm
• B. 6 cm
• C. 9 cm
• D. 8.2 cm

Answer 1

The correct option is A

4 cm

Let us assume that her distance covered in cm in the map be x.

The scale and distance in kilometer are directly proportional to each other. So,

$\frac{A}{B}$= Constant,
where
A = distance in cm and
B = distance in km.

$\frac{A_1}{B_1}$ = $\frac{A_2}{B_2}$

18 x = 72

x = $\frac{72}{18}=4cm$