Let distance covered in the map be x.
Actual distance (in km) 18 72
Distance covered in map (in cm) 1 x
Here actual distance and distance covered in the map are in direct proportion.
∴ 18/1 = 72/x ⇒ xX18=72×1 ⇒x=72×1/18 = 4cm
Hence, the distance covered in the map is 4 cm.

Class 8 Maths Chapter 11 Exercise 13.1 Solution in Video

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